It's not a core protocol's concern and the fact that it's being successfully implemented proves that there are no fundamental limitations there.
I'm not happy with how the collaboration and planning between various parties involved went over years and I do believe that a lot of these adoption pains are fully self-inflicted, but that has absolutely nothing to do with Wayland's technical design.
I can, I just did. It's just not a thing that should be there at all, and it's obvious once you take a second to look at what's actually in it and why (spoiler: there's too much in it and not much can be done about it now).
I'm not happy with how the collaboration and planning between various parties involved went over years and I do believe that a lot of these adoption pains are fully self-inflicted, but that has absolutely nothing to do with Wayland's technical design.