Not too deep in that conversation but afaik it’s a series of choices that just continuously make Ubuntu less usable.
from what I “know” it seems to be mostly:
the baffling decision to keep riding the dead Snap train instead of the now widespread Flatpak one.
some drama around them switching from Gnome 2 -> Own Desktop -> Gnome 3 and related decisions, not sure what the problems there were but apparently a lot of people didn’t like it.
some stuff about telemetry, not sure how relevant this is currently but I heard some people complain about it.
Again, not really sure that’s it but it’s what I recall hearing here and there.