Please forgive me oomis. The only people I would bother saying “don’t be a fool” to are those that are clearly not.
Next: I didn’t miss your point, I extracted one point out of the big picture to show my own view. You say the frummest of the frum were wearing it? All I have to say is…. don’t be a fool. Bais Yaakov doesn’t equal frum, Satmar doesn’t equal frum etc. They each have every type within their ranks. This being said, you can’t just follow the crowd. And what “everyone else does” is not what makes it correct.
I’m not saying anything about chachomim now or then- I was just bringing out a general point I feel strongly about (applies accross the board)