For some of this stuff, I'm pretty sure the difficulty of keeping up with it is the whole point - it's effectively a way of signalling that you're part of the r

For some of this stuff, I'm pretty sure the difficulty of keeping up with it is the whole point - it's effectively a way of signalling that you're part of the right group of people with the right views and connections, and what stops outsiders from just learning to imitate the signals is the way things which were mandatory suddenly flip to horribly offensive without rhyme or reason.