How very postmodern of you. True dat.
It’s not postmodern, it’s understanding reality. Language evolves, language has always evolved, language WILL always evolve. Just because somebody wrote a prescriptive people think that’s forever. It isn’t. Language is still going to evolve, maybe a little slower because now there’s a book teachers can point to, but it still will happen. People change, societies change, languages change. Sometimes for the better, sometimes not, but change is inevitable. And complaining about it just says you’re stuck in the past, that you have failed to keep up.