When this happens it’s often because a backend component gets rewritten and somebody decides that it’s too much work to re-implement some features for the new backend. It’s much easier to come up with a PR spiel for why removing the features is actually a good thing.

x86 Macs are not the greatest example of longevity at this point.

EXWM. I am a longtime Emacs user so merging the concepts of Emacs buffers and X windows is a huge benefit. Only one set of keybindings to worry about, all of my Emacs window management stuff works for X windows too. One less external dependency to worry about too. In a new environment (like when starting a new job etc) as long as I have my Emacs config I am good to go.