It was partially made for car infotainment systems that are knowingly weak hardware.
Nvidia's driver do something weird on Wayland when my laptop is connected to HDMI, probably something funky with the iGPU<->dGPU communication. Everything works, but at the whims of Nvidia an update reduces the maximum FPS I can achieve over HDMI to about 30-45fps. Jittery and painful, even on a monitor that supposedly supports VRR.
That's not really Wayland's fault of course, but in the same way Linux is broken because Photoshop doesn't work on it, Wayland is broken for many users because their desktop is weird on it.
Depending on your DE, you have a choice not to use Wayland. Like, yes, if you use GNOME then you don't get choices but that's their whole ethos, and unfortunately I've heard about KDE dropping X, but there are other options and as I type this comment in i3 I can assure you Xorg still works.
Mind you, the libc5 -> glibc2 upgrade was pretty horrible in Debian land, so they didn't always get it right in the early days...