Rizz isn't even all that bad. Yeet is far stupider, though fun. Cap/ no cap is pretty worthless, but oh well. None of it is any worse than the slang from any other generation.
"Bitchin'" is such an 80s phrase that has mostly died out, and I hate that it's not more widely-used. I sometimes drop a bitchin' into a sentence and people take it as me being upset, when it's literally the exact opposite.
Just because they use it doesn't mean it ain't stupid. Rizz is at least short for charisma. That makes sense. Cap/ no cap doesn't make sense though. It's a net negative for language as a whole.