Those lobbies that are called "only noobs" like playing against better players will make you improve faster so I dont see why theyre trying to avoid worthy fights
Would you want to play against an inexperienced player? It's pretty much like lobby rooms that say "No scrubs" or "Good players only". They want to fight players like them.
They don't want to improve.... Remember, despite how long its been the majority of gamers still think Fighting Games are about Pulling off Fancy but Difficult moves and combos. Hell I was one of those people before DoA and my friends are like that aswell. They don't want to improve... and I don't blame'em.