That kind of arrogance boils my pee. It’s the, “I’m a professional,” with nose stuck in the air, as if they’re somehow better than you. I’ve worked with one guy, where we had a gig and needed to get the set together, it was a pick up band, but because he was a “pro” it was suggested that he didn’t have to pay his bit of the rehearsal space cost and he might have got a bigger slice of the gig fee too. I went along with, but it annoyed me, he wasn’t/isn’t that good, just a pub/club player who is a local name. Some folk need a reality check.