I've been using Wayland for a while, but I remember two factors that might have held me back in another universe:

• lack of support from Xmonad (so group 3 from the article)
• I used to make extensive use of keyboard remapping using xkb & xcape, and last I checked that doesn't work in native Wayland apps. (I think that would've put me in one of the niche groups.)

I'm not sure if those restrictions still apply. Luckily for the simplicity of my life I switched to Gnome (partially for Wayland support, partially for a simpler setup), and I switched to doing keyboard reconfiguration in hardware.