I've never liked this attitude of "they're not supposed to get money for their work".
That's not it at all. Of course making music is U2's job, it's what puts food on the table and keeps a roof over their head. There's a difference between maintaining a healthy level of artistic creativity with good business sense, and being a greedy out-of-touch fool like Paul McGuinne$$. And if you think that's a baseless slur, all I need to do to demonstrate the accuracy of calling him a "greedy out-of-touch fool" is to point to his stance on ISPs. It's not a baseless slur to call somebody a greedy out-of-touch fool if they are a greedy out-of-touch fool like McGuinne$$ is. The fact we even know the name of U2's manager speaks volumes.
As far as I'm concerned, McGuinne$$ is the correct spelling of his name. It's not childish; it's getting things right.