I don't know many Linux users doing 4k+ at 144hz. I am wondering if you do any screen capture or desktop recording, and if so what software you use and what your experience is like? I cannot reliably capture 4k/144hz with my setup but my desktop environment is still on X11. I tried KDE/Wayland and had a better experience, but run into other bugs based on their integration.
Just curious how your experience with sway has been. I installed it but wasn't expecting to come with no config at all and didn't really want to be bothered setting it up just to test screen recording.
The issue with X11 is that even if you record (using any software) it causes the display refresh rate to artificially drop and its a very bad experience overall when you run at 4k144hz. Ultimately, the future is wayland but I am a little surprised how slow it has been for everyone to integrate it into their software.