Chiming in, I’ll say that I mostly agree with your points, except for one:
Someone who just started looking into switching to Linux is looking for neither X11 nor Wayland support.
They won’t care about X11 vs Wayland, sure. A non-ignorable number of them will care about stuff like HDR or multi-monitor setups where different refresh rates don’t stutter and VRR works, and that’s where proper Wayland support becomes a must.
If you recommend someone a distro that can’t do those things and later have to tell them that they have to switch distros for that chances are high they’ll just go back to Windows.
I do think those featues have become pretty common in PC gaming nowadays, which is why I’m more in favor of openSUSE as the beginner distro if I had to pick just one, but sure, let’s put that aside.
When it comes to Linux though I just don’t think there’s a one-size-fits-all distro yet that I can safely recommend to everyone. And getting beginners onto a distro that fits them can greatly benefit their initial experience, so I think it’s worth it to give them a few simple choices. That said, you’re completely right that the way OP tries to explain the differences isn’t how you should do it. Ever. Less choices, less jargon, less mentions of fringe distros. It also doesn’t help that a lot of it seems to be based on hearsay rather than actual first-hand experience.