Developing non-mainstream tastes in almost anything used to be pretty hard.
The driver for this is a good thing, but I’m not sure this particular effect is. If you had non-mainstream tastes back in the day, it was a sign you were honestly committed to those beliefs as evidenced by all that effort you put into it. Maybe you became a bit close-minded as a defensive mechanism (otherwise all that work was wasted), but overall you were an interested person, and interested people are more likely to be interesting and do interesting things.
There are a large number of people these days who seem weird for weird’s sake, and I don’t find this particularly interesting.