They turned the Greek Gods into a bunch of cute anime girls to make money, and you're worried that they haven't got a deep and nuanced view of Greek mythology? Are you serious?
Anyway, the Mythos vtuber group is some pretty clever marketing. It's a clear and obvious point of difference over other vtuber corpos that's easy to remember, which puts them ahead of all the other new vtuber groups struggling for market share and brand recognition in an increasingly saturated market.