It's entirely voluntary the same way working extra hours is "entirely voluntary" when your boss asks you to do it.Aside from tormenting Maya (which I'd argue is a good thing) and her random beef with a CHICK MC that isn't on the M&J path she doesn't do much wrong. The prostitution ring is entirely voluntary (and we know Riona/Sarah/Mel enjoy it at least) and she doesn't randomly punch her housemates when things go bad.
Quinn is second in command for HOTs and what she says has a lot of weight, in particular for fresh members. Let's put it this way, if there was nothing wrong about the prostitution ring (let alone the whole drug dealing) then Quinn wouldn't be hiding it from Sage.
Then again, if you think that bullying someone is a good thing then we have vastly different ideas of what good thing is.