The reason i use the artist splitter in the first place is just to have a display artist name (like, unit/group for example), and a list of the performers/artists line by line. Never would i use ";" as display artist seperator, it's unaesthetic and does things i don't necessarily want. I might as well just put a group name instead.
Most places online, whenever you'll find a list of grouped artists, they'll almost always be seperated with , rather than ;. That's really all there is to it, i think there's just some confusion