"Premature" is a weird term to use here, considering the whole point of these things is to be able to do integration work in the first place. And it's not like we can't revert the change before release if it turns out to be problematic.
Yes, premature as in proposing a huge change to the next version of Fedora before ensuring current users can even test/evaluate said change. The fact that there are packaging conflicts when installing pipewire-pulseaudio strongly suggests that few people have actually been able to install and test the package.