Which hominem do you think I am attacking?

You can have any opinion you like, but if your opinion consists of passing around second hand sneers, it's a crappy low-value opinion. "It's called the American Dream because you have to be asleep to believe it." - "haw haw look at all the dumb sleeping people being this new". That's not an opinion, not a valuable commentary, it's just sneering.

Carlin, obviously. You’re attacking him rather than his commentary.

If you think his commentary isn’t useful, insightful, whatever, that’s fine. But basing your critique on his social/financial position is not good form.