My point is more if I, a reasonably informed person about pop culture, have not noticed because none of my friends (some of whom have been k-pop fans for years)

My point is more if I, a reasonably informed person about pop culture, have not noticed because none of my friends (some of whom have been k-pop fans for years) have never mentioned it or posted about it, then I have to assume I am either living under a rock, all my friends are deliberately hiding it, are also part of a bubble of non-noticers, or it's simply not a *mania.