It’s very nice to not have a dozen different versions of the same distro to parse through and figure out that are simply the same distro with a different DE. Moreover, very few of them offer this many options.
Cachy could be doing a better job explaining what the user is looking at here and who each of these is for. Pretty easy to sum up in 1-2 sentences…
Maintenance. Your distro has to support all the provided desktops, which includes a multitude of display managers (“login mask”) doing their own opiniated session thing.
For example, Gnome is no longer supported by Artix, because they have now a hard requirement on Systemd.
It seems very unlikely to me that these are all “fully supported”. Probably just 1 or 2 and then the rest are just like “yeah I mean you can try them”, but I can’t find any further info on their site.
But then they are not supported (shipped with them).
Being shipped with the distro is not the same as being fully supported.