Article 150 covers bringing the party into disrepute by living too egregious of a conspicuous consumption hypebeast lifestyle. So it's actually the "party members shouldn't bring the party into disrepute by buying so many gold-plated Bugatti Veyrons that normal people are beginning to notice/complain" clause.

Technically the "don't get caught at strip clubs" clause is Article 151. Actually, to be serious, it's not even that as Article 151 is not really a generalised "party members can't have extramarital sex ever" rule, but just a "don't abuse your power to be a sex pest" clause. The real "don't get caught in a strip club" provision is Article 153 (i.e. don't "violate social public order and good morals") and since the sex industry is, as far as I'm aware, still very illegal in China, a party member being caught in one is basically also a criminal matter as well as a party discipline matter.