This is a big deal. More Linux users leads to more Linux-supporting software, which leads to more users.
It should correlate with more donations , the donations linux mint are getting are also growing fairly consistently. the same is true for the “Open Source Collective” which is a fiscal host for open source projects.
good is the enemy of excellent. X11 works for most users (almost all the users?) well. You can see that with the adoptions of other standards like the C++ standards and IPV6 which can feel like forever.
Another thing I think one of the X11 maintainers mentioned iirc is that they have been fairly gentle with deprecation. some commercial company could have deprecated X11 and left you with a wayland session that is inferior in some ways.