I don't get how this is a bullshit job.

Gamer #1 likes to play the game. There are some parts he likes more than others.

Gamer #2 comes along and says, OK I will do the parts you don't like, and I'll sell my output to you for $XXX.

Gamer #1 agrees, the transaction takes place, it is entirely voluntary, and both participants find the outcome to be valuable for them.

How is this bullshit?

This is pretty much the reason we have money.

What sounds like bullshit to me is there is some... quasi-socialist I guess? value framework being imposed by some would-be intellectual who's totally uninvolved in the transaction, but thinks he knows better than the ones who are. Fuck that guy, he has no skin in the game.