It's the cartoon anthropomorphism that I can't stand.
Threepio and RA-7 are androids but they look more sculptural, those droids come from the same design school as VINCent from The Black Hole.
If you look at the really odd droids in ANH they don't look even remotely cartoonish or humanoid.
Even the Gonk is a box with legs, no recognisable eyes or lips.