That’s ignoring how much control and influence the platform itself has. It’s not a free market, the platform decides who trends and what matters or not.

No, it makes it a kind of human nature. People are not homogenous, there are distinct sub-types of personality, albeit not that many.

No. A majority of people doing something in a particular moment doesn't mean that it is an intrinsic quality of people. Otherwise we'll start to say that Coca-Cola and The Simpsons are genetic destiny.

There have been plenty of times during history during which nobody cared what young people thought. I'd venture to say the majority of it.