For a lot of people Ubuntu is the linux. Canonical is just good at marketing. For all it worth, Ubuntu is not the bad choice for average user who’s not into ricing and not bothered by bloat.
Manjaro: haven’t you managed to kill it yet?
I’ve been using Arch and Manjaro for couple years each and in my experience they both break regularly. But, for some weird reason, Arch Linux is praised, when Manjaro is shamed upon.