If anything, Wayland is designed for closed appliances. The free software ecosystem does not need to distrust applications.

Imagine if web browsers all had mutually incompatible DOM implementations for basic functionalities.

That's the situation with Wayland that people are complaining about. I don't need innovation in keyboard and mouse sharing, I need it to work.

I mean, at least with web browsers they usually converge on a common spec eventually, and most of the time you just have a bit stupid repetition in your CSS for a bit. Wayland compositors seem to be actively against this kind of process.

It's a very forced comparison trying to swap in the web's security model, where one runs untrusted code from arbitrary third parties automatically, for a personal desktop computer context where a single user is in complete control.