@gnusocialjp
> And user can use desktop/mobile client application.
I'm not sure if there's any client for desktop that supports GNUSocial however.

> So I think it is not important for web UI personally.
I agree if it is on mobile clients, but for desktop GUI clients there isn't much choice and they aren't that good. For example I use old Tootle (a desktop client) for Mastodon, in new versions the developers added support for Pleroma, but at the same time they decided to switch from GTK3 to GTK4 which I don't like very much. Here the web UI becomes the main factor new users will judge. And also, if you know some decent desktop clients please let me know.

> And it is not problem because you can receive our posts from your timeline. I think you do not need to directly access our site by web browser.
This is only because I already have an account in other instances.

I use different browsers and the main one I use to browse the web, which consists of mostly random and untrusted sites, is always JS-off. The original GNUSocial is working perfectly and now this is a heavy downgrade to me. I do not mind if the interactive features like tooting require JS (this is where GNUSocial really shines, it is even usable without JS), but now, I can't even read anything. Mastodon would be a good example on this. I can read things without JavaScript, without login, and they still have a lot of users. Also UI or the appearance is independent from the client-side JavaScript - that is what CSS is used for.

> I think almost people use modern web browser. User for old web browser is a little.
Yes, I understand. But modern browsers themselves are not good in terms of spyware - their development is fully driven by companies such as Google (including Mozilla), Microsoft and Apple.

If users try to use other browser, or just the older version with less "feature", the webapp JavaScript may or may not work, depends on how they changed the JavaScript standard and more importantly, how the webapp developers adopted them. This also means I have to worry how long I can still use the webapp without being forced to update or switching my browser. However, I have never seen JavaScript that runs on older browsers but not modern browsers.

Anyway the JavaScript problem is 2 layered:
1. Whether I can browse some page without JS.
2. Whether the JS works on my browser.