Distros are not dropping Xwayland, just say "run our app trough xwayland". Recommending X11 distros or compositors is not good advice. X11 on its own is dead, and things like KDE do very little development on their X11 version.
Some if not most of these bugs are 100% application bugs, very few actually used wayland compositors have performance bugs for example (but your app running in wayland native might).
With what a dumpster fire X11 has been lately its a bit weird to bet on it for your application.
> Distros are not dropping Xwayland, just say "run our app trough xwayland".
Yes, just saying "Wayland is only supported through XWayland" is usually a really easy solution that does in fact just work.
> X11 on its own is dead, and things like KDE do very little development on their X11 version.
Eeeeh... I think calling X "dead" is hyperbolic. It is less actively developed, and GNOME and KDE are migrating away from it. But it still works approximately as well as it ever has, and pretty much anything except GNOME and KDE is quite likely to continue working for the foreseeable future.
X11 works as well as it ever did, but it's so stagnated that that doesn't mean a whole lot. I run new hardware, and I tried X. It's bad. HDR? No. Fractional scaling? Looks awful. Splitting, tearing, and artifacts? Believe it or not, still a problem on X.
There's a film of jankiness that permeates X that I just don't get on Wayland. Animations don't drop frames. Things happen when they should. My text actually looks crisp. On Linux!
I dunno, I'd say it goes both ways. I'm still on X because last time I tried Wayland still had weird janky corners that I kept hitting. Granted, yes, X also has problems, so I'm stuck in an awkward intermediate spot.
Technically if you power a laser shooting into space with solar panels you are cooling the planet, but you are ofcourse right in practice and on the scale of the universe!
The app is a competitor to google drive (app). It is used to upload/download, backup, syncronize (one or two way) files, media and documents between the device and the cloud. Doesn't that cover more than one of the mentioned uses? Why would FilesyncPro (example) get to have the permission but not nextcloud client? Even for media files specifically there are a lot of gotchas without full file access, like risk of location being stripped from all images synced trough the app (unless user gives media location permission) or similarly missing exif.. To upload on change it needs to be allowed to watch the filesystem
Meanwhile google drive gets to be installed as a system app
Some if not most of these bugs are 100% application bugs, very few actually used wayland compositors have performance bugs for example (but your app running in wayland native might).
With what a dumpster fire X11 has been lately its a bit weird to bet on it for your application.