The compositors are the ones doing a lot of the protocol development. They want to have WIP versions so they can see what issues crop up, they’ve been making versions all doing. Now, I agree that it is slowing things down, but it’s more of just an additional thing that needs to get done, not so much a chicken and egg problem.
I feel like there’s also the point that on Mac OS a lot of stuff “just works” because everything else just doesn’t work at all. I have a number of things that just aren’t going to work at all on Mac. Linux is obviously much more permissive, which leads to a lot more kinda working stuff that just wouldn’t work at all on Mac.