I agree, but that's just the nature of the beast. New names "sounds silly and like video game create-a-team" simply because they haven't been normalized by existing for decades.
Most the existing team nicknames in all sports would sound REALLY DUMB if they hadn't already been normalized for decades.
Just try it cross-sport with nicknames... Utah Dodgers? It's hockey, not Dodgeball. Utah Athletics? It's a sport, they're all athletic. Utah Cardinals? What does a bird have to do with hockey? Utah Blue Sox? So uninspired.