As a parent of a teenager, I see them use "unalive" non-ironically as a synonym for "suicide" in all contexts, including IRL.
Sincerely the child of a parent who committed suicide. He mentioned suicide a few days before.
Just that they suck at coming up with pithy new slang terms.
I agree though I think they're picking it up from online censorship in this case, not being fragile.
Unalive is one of the popular ones, but it's a whole vocabulary at this point. Guess what "PDF file" stands for.
Online env ban the word suicide. No one uses it. unalive is not banned. Discussion is the same, word or no word.
Vernacular 101.
Unalive is mostly to avoid censorship same as ahh. But once they enter common usage it's not really about censorship anymore.
More in such a fad than any previous generation