Irony? Camp? “genius is a camp - so good that it’s bad”. “In the sentence ‘this is the sh1t’, ‘sh1t’ is camp - so bad that it is good”.

Semantic inversion or contronym

Sarcasm

There’s a lot of this in African-American vernacular. I’m not exactly sure what a “bad bitch” means but I believe it means attractive whore, but does it or does it just mean a good woman? Either way that’s two traditionally negative terms that seem to be used positively.