FWIW language is for communicating concepts and if people understand it it is the right word. the word police have no jurisdiction with teenagers ! Neither the marketing fraternity. & Don't even mention estate agents!

Now which meaning and era do you want for "hot" or "cool"? Or:
gay - heterosexually promiscuous, happy & outgoing, or homosexual? Pick your era (give or take 100 years).

Language isn't static, the French know that (in actualité).