A lot of straight edge teenagers either lose their edge (leave alternative subcultures) or quit going straight (start using psychoactive substances). That said a lot of punks wind up sober and at that point can be considered straight edge.

So where are they? The sort of places alternative folks gather when not consuming substances. They’re at an anarchist books to prisoners program, or food not bombs, maybe one is in the band at a small punk show you’re going to. Hell maybe it’s even one of your coworkers.

Subcultures are really easy to see in high school because teenagers often don’t like to code switch and they’ve got little filtering. Add in that its easier to be sober when you’re a teenager and it feels rebellious and like you’re saying fuck you to the man. Meanwhile at 30, especially if you’re deep in alternative subcultures, you’ve probably learned the demons your friends are trying to drown in whiskey. You may have friends who had the whole Pat the Bunny arc. Loudly announcing your sobriety and acting like it’s super cool is one thing at 16 and another thing when someone you know just fell off the wagon.

Oh also as adults a lot of them are more annoying about being vegan than being sober.