IMO the issue is that the same group stewarding Wayland was also xorg, and intentionally stifled improvement on xorg even when the work just a matter of merging the PR.
Not a problem for obviously-correct changes of a couple of lines, but most PRs aren't like that.
Open source developers are not required to spend their time prioritizing your priorities. You just have to look to Xlibre to see that a lot of contributions are quite bad quality, and in a C codebase of Xorg's complexity and security profile it's not a small job to review things.