In hindsight you are right, but I'll give you the mentality that 14-year-old-me had:
Basically, the idea of being racist is so absurd, that by being ironically racist I'm poking fun at the racists, not the races.
It's not a completely ridiculous notion (though it's abused heavily); satire is a common tactic for comedy. Clearly people go too far, and I don't think it's a good excuse to say "it's just satire".
I mean, I do think it's way too easy for someone to say something horrible, and then get off with no consequences because they claim it's just a joke (or locker room talk... cough).
I'm not exactly sure where we draw the line socially. I don't really have a problem with something like The Colbert Report, but I also really hate the "shitlord" movement that seems to be happening.
Basically, the idea of being racist is so absurd, that by being ironically racist I'm poking fun at the racists, not the races.
It's not a completely ridiculous notion (though it's abused heavily); satire is a common tactic for comedy. Clearly people go too far, and I don't think it's a good excuse to say "it's just satire".