That's unfortunate. AFAIK GTK4 will be Wayland-only and out in a few months, and some bleeding edge distros such as Fedora already run Wayland out of the box, except if you have NVIDIA, because Xwayland is still crap under nv; but not for long, apparently there's some rumours and intention to improve the nv/xwayland situation, just nothing concrete out yet [1].

So yeah, betting on Xorg in 2020 is not a smart move IMO.

1: https://www.phoronix.com/scan.php?page=news_item&px=NVIDIA-G...