Indeed. I kept hearing "Wayland solves problems with two monitors at different refresh rates" But when I set up mismatching monitors, X11 didn't skip a beat (1440p native/120Hz, 1440p (being fed to a 4k native monitor)/60Hz
Conversely, the worst issue I had with dual monitors was with Wayland: Wayfire thought it was a brilliant idea to not support "window spanning two monitors" as default policy.
It feels to me like Wayland, GNOME and Systemd all come from the same sort of developer brain infection making them build vast, all-inclusive structures that are explicitly hostile to anyone who doesn't have the exact same underlying assumptions and needs.