Wayland reduces bugs and standardizes the desktop, and flatpak makes it easier for distros to include apps without going through the process of packaging them.
This post is FUD bullshit, Wayland and Flatpak are making it easier to run an indie distro.
As I have to give a few lectures, I can't say I'm pleased with how screen-sharing or using a projector in the classroom fails almost half of the time and always embarrasses me in front of everyone. I ended up purging the Wayland stuff and going back to good ol' i3 and I haven't had a display-related issue ever since.
X11 works, it may not be as sexy or modern as Wayland but it's battle-tested and just works and for the vast majority of people, excluding Wayland's bugs, the differences are not even noticeable.