Has anyone tried Harmony OS?

Unless you live in China I'd probably avoid this. There are enough privacy concerns with an OS made by Apple or Google, especially when layered with additions made by separate manufacturers like Galaxy phones with both Google and Samsung... but at least they're subject to a comparatively free media with large amounts of scrutiny and the possibility of legal action. I wouldn't trust an OS made in a country where the government has the legal right to demand any changes they see fit including back doors, and if they even if you believe other governments have back doors I trust China's government a lot less to keep them secure against random hackers.
This isn't a conspiracy theory, foreign people visiting certain parts of China have explicitly been ordered at the airport to allow them to install a monitoring app on their phones. This has been reported when tech press were visiting the tech-focussed province I forget the name of for some event.
For clarity I don't trust Apple or Google either, I also have absolutely no problem with the Chinese public, but I have little choice but to deal with someone I don't trust if I want any tech products at all so it comes down to who has the most disincentive. At least Google and Apple have their reputation to lose if there's a backlash.

Firstly I'm just sounding a note of caution, secondly this isn't personal politics. I don't trust my own government much less the US one but the Chinese government has a well recorded history of accessing personal data without warrants or oversight, surveilling their own public to a far higher degree than other countries and consorting with hacker groups who occasionally go rogue.
If your opinions differ that's your right but I'd make the same warning if someone wanted to use a service like 23 and me where it's publicly known they go beyond genetic heritage testing and sell data on your likelihood of certain illnesses to medical insurance companies. I'd even give the same warning if the OS was made in close association with the US government, or my own British government.
Treat politicians and governments like companies, they are not your friend.

https://www.youtube.com/watch?v=Id870OPNBUo
So if this is just the built-in screen reader with no tweaks whatsoever, this is probably outright copyright infringement. Hear the VoiceOver sounds? The voice resembles SkyVoice. You might already be familiar enough with it if you've ever used ZDSR. This one has a Britishish accent though.

I understand that and if it came across like I thought that wasn't valid that wasn't my intent. Curiosity is good and you're obviously aware enough of your privacy to make that decision for yourself, I was just adding a warning for people who are less aware of these things. If it does anything differently to Android or iOS I'd certainly be interested in how, innovation is always good.

Thing is, Huawei is a company and not just some amateur guy experimenting with stuff and doing things like making some personal VoiceOver mod for Talkback by replacing the sounds for the sake of fun or out of curiosity so it must've acquired the VoiceOver sounds by signing some contract with Apple or somehow made sure that it did not violate Apple's rights and put itself in legal trouble by doing something stupid like just copying the VoiceOver sounds and hope no one notices. Still, it does indeed seem like the sounds are the exact same ones and I don't know how but the possibility of a copyright infringement did still come to my mind.

I saw the video that someone posted hear, it would be cool to try.

Wow yep, so reminds me of VoiceOver, most of those sounds are the same, apart from that tone thing when he was scrolling. Incidentally, I searched for the HUAWEI P40 Pro on Amazon UK, but all the descriptions say the OS is Android, and not this Harmony OS thing. What's that about? Either it's Android or Harmony OS?

It only supports English and Chinese, so for bilinguals it is not an option.

I remember reading somewhere that Harmoney OS is just a skin on top of Android. Just like Samsung's OneUI or Nothing OS by Nothing. Since Android is Open-source, anyone can take it's source-code and built their own branded OS on top of it, similar to Linux.
My assumption became stronger when I saw how the magnifire worked. Tripple finger tap etc, very close to current main-stream Android phones.
Now, the interesting part. Since it's based on Android, I wonder if I can extract the APK file of this screen reader and run on my Motorola phone. Technically it should work, unless the maker of the screen reader have somehow blocked it from running on other devices, or introduces dependencies which only Harmoney OS can fulfill.
Why I would want to do that? Privacy concerns aside, Just for fun of it. Would be nice to have those Voiceover like sounds.

For the earlier versions of HarmonyOS it was possible to install Android APKs on the system, I read somewhere that Huawei is distancing the OS from Android somehow and it became primarily impossible to install Android apps on HarmonyOS.

Check this out:

https://www.gizchina.com/2024/10/24/finally-harmonyos-is-completely-detached-from-android/

Thanks for the explanation.

I here you.
I request you to here following:
https://www.phonearena.com/news/android-apps-can-run-on-harmony-os-next_id165637
And also this:
https://www.reddit.com/r/Huawei/comments/we8utx/does_huaweis_os_support_downloading_apks_or/
Now, one of those does mention an emulator, so that means may be the native support is completely gone. But, does it also means that initially Android APKs were supported and later the company simply blocked them from getting installed? someone should try to look in to it's code, is it really Android reskinned as Harmony, or, a full revamp from ground up.