Um...idk if you’ve ever actually watched the show since none of those facts are even remotely true. I’m not claiming IASIP is perfect, but the show is satire. We’re not supposed to laugh WITH the characters, we laugh at them and we WANT to see them fail (which is what they do almost every episode).
They never “paraded” around in nazi uniforms. They openly hated their nazi grandfather and only used his uniform as a way to get money, and were rightfully shot down IN THE SAME EPISODE by the museum owner they were trying to sell it to, who was horrified that they were trying to profit from a war criminal’s uniform. They ended up burning the uniform.
Also, when did they refuse to sleep with Carmen (the trans woman)? Carmen was one of Mac’s longest-running relationships and it was made very clear it was a sexual relationship. And Mac was the one who was portrayed as the asshole for the way he treated her.. In fact, Carmen is one of the only few characters on the show who not only left the gang unscathed, but got a happy ending - she got married, had a baby (which Dee was the surrogate for), and lived happily ever after. Carmen was never the joke. Mac’s bigotry and internalized homophobia was. And he got his ass kicked (literally) because of it.
As for the racism....that’s another thing that is satire, and it genuinely upsets me that people don’t get that since it’s a big point of multiple episodes. The whole point of this season’s premiere was to show just how little they truly know about what it’s like to be a minority, even though they claim to be super progressive. They’re never openly racist, and the nasty things they HAVE said in the past are never played for laughs and are always shot down by the people around them. The jokes revolve around how scheming, selfish and money-hungry they are, and how they could genuinely run a successful business if they weren’t so easily distracted by each other’s scheming and selfish behavior. The show wouldn’t be funny if it was about people who are genuinely bigoted and hateful.