> There are multiple cases of this: OBS can't screen record (it segfaults instead), I can't copy-paste, and I can't see window previews unless everything implements a specific extension to the core protocol.

Yeah. And? They did that. On my Wayland desktop, copy and paste works fine, window previews work fine, OBS screen capture works fine.

> The actual "threat model" here is baffling and doesn't seem to reflect a need for users. Applications are not able to see each other's windows, but they're not able to interact in any other way that could potentially cause problems?

In any other way? The last paragraph just explained the other way.

That's when I stopped reading. If they can't even make a coherent, reasonable argument from the start and instead just blast out a bunch of bullshit, no one should be listening.