I really don't get y'all making it into a class thing though. Some people just ain't comfortable around certain scenes. It seems like y'all are making it out to be that because a party was blacker that it means it's low class. Hell I got a uncle that's a legit millionaire and they stay throwing parties that look just like that BBQ. Lawrence just seems more nerdy and uptight. I don't view it as a class thing but just more of a cultural thing of what types of people he feels more comfortable in.
It's right in your post, "some people just ain't comfortable around certain scenes", but why is that? In his case specifically. The show goes out of it's way to subtly highlight that. Why would he be less comfortable at the BBQ? I am one of those people who is probably secretly slightly uncomfortable whether I am at a cookout party like that, or in a modern art laced penthouse party, I don't know where I "really" belong, but people would never see that, unless I told them. Dude couldn't hang there. He didn't want to.
That's why I used quotation marks, because it's deeper than finances, which is why the term "classism" was used by Gold Coast. It's true that you can't always judge someone's finances or socioeconomic status off things like that, but you can make an educated guess. It's the cultural norms too. Everyone's backgrounds are different, but when you exclude good people based on things like that, it's troubling. It may not even be something he is aware of.
Also, unrelated, but I think Daniel's whole response and apology has been confused by Issa and the audience, granted, it was a bad apology, and it should have been easy, (just directly say you don't see her as being demeaned, and that was not your intention, and that's not what sex between the two of you is about) but the point, I think, that the show is making is Daniel didn't even know why Issa felt so disrespected. That's important. Men often don't get, or act with empathy where sex is concerned. His comment about "being even", was I think in reaction to being humiliated and demeaned when he showed up at that party. It was a horrible way to phrase it.
The hang up on the Lawerence and Iss relationship is painfully hilarious at this point, you don't HAVE TO TAKE SIDES. There were mutual problems. You don't have to assign blame and quantify each hurtful act.
And Issa and Molly friendship? Is the most secure on the show. Those little moments after she walked out of the bathroom are supposed to convey that even in their little fight, they are there for each other. Some audience members seem to be very emotionally just out of touch.