Xubuntu is just one variant of Linux, and judging by the screenshots on their website, it’s an old-style Linux distribution that we might have seen 5 or 10 years ago.
So while all cars are not 1985 Plymouth Reliants, all Linuxes aren’t Xubuntu, and I wouldn’t reject Linux out of hand based on soley evaluating it. You certainly can 
, but I wouldn’t.