I'm in my 40s now; I was a big lowercase-only typist back in the '90s and much of the '00s. I still do it when using messaging platforms, but tend to use proper capitalization elsewhere, like here.

Funny how it's coming back, with the younger generation embracing it. Everything cycles, I guess.

i've been writing lowercase only since the 90s and i'm a first year millennial

the genz kids are just the first ones who made it broadly acceptable... thank god, because it's a waste of brain cycles without added information - and i'm a native german speaker where it's even more stupid