No, they are playing random NL team for one of 81 meaningless regular season home games in 100 degree heat for 3.5 hours.
Sorry, if you can get huge crowds for a random regular season game for the Dodgers, you shouldn't get dogcrap attendance in one of 7 home games in a year. Or you shouldn't return everybody from a final four basketball team for the most storied CBB program in the country and draw like 8500 per home game.
Look, their fanbase is terrible. The city just doesn't care about UCLA sports. We basically have to listen to people say "if USC wins again, they'll draw. Their games were HUGE in the Carroll days." So yes, if both the LA NFL teams leave again and they have the best college team in decades, I'm sure they will sell out. Otherwise, they'll get a decent crowd for a decent team, and really good crowds if they are playing really well. So basically they are like most teams not on the west coast.