>Any app running under Xorg can see the contents of any other app runing under Xorg.
It's one of the problems addressed by Wayland
It's one of the problems addressed by Wayland
Many people (me included) use Wayland as a daily driver, so I guess it's mature enough to be used, and I don't even use a DE with all the convenience, I use Sway, coming from i3, and everything I used is working fine, either with an alternative, or relying on XWayland.
>it still has significant shortcomings in hardware support
Apart from Nvidia (which is not that great with Xorg either) I don't know what you're referring to.
> It isn't responsible to suggest it as an alternative
Some mainstream distributions (e.g. Fedora) have defaulted to Wayland, are you calling the maintainers irresponsible?
The fact that nobody really uses them should tell you that the sandboxing craze and whitelisting is mostly if not completely security theater and hostile to the general workflow typical for Desktop applications.
Wayland addresses none of those problems. Wayland is merely just a protocol that can be used to blit some bitmaps together. The protocol says nothing about security except that those problems should be dealt with other protocols which are not part of Wayland.
One notable exception is OpenSSH, which uses the SECURITY extension with the -X flag (which is their recommended way to use X11 forwarding).