Without even judging the overall design (personally I don't mind the simplicity), why on earth do they use such inconsistent fonts? 3 different font sizes (and maybe also mismatching horizontal spacings) for 5 assorted logos??? This is insane...
I really think it's fine: the web assembly gets to play with its parallels between W and A, JS gets to mirror the J's bottom-bend in its S (TS tagging along because those two really are more than just accidental neighbors), whereas CSS can indulge in summetry with its twin S by making them internally symmetric themselves. A logo that contains an acronym isn't really a logo when the characters are just picked from some font instead of tailored as part of the logo.
Consistency still matters. If you’re going through the trouble of making logos similar so they are understood as part of a family, don’t give up half way.