At the bottom what you're saying is no one is right about anything ever and its all just opinions and value systems maaaan. Sure if you define a value system where yelling a lot and accomplishing little is the goal then mission accomplished, but I don't think its classist to say that's a pretty shit value system. It certainly isn't as good a value system as any other in the sense that there's some alternate universe where the conventionally successful people have those values and the conventionally unsuccessful have the PG-of-our-universe values.