It is immature and if you go around showing it to girls expecting a date you’ll be disappointed.

Do it because it’s funny, not because you could use it as an ice-breaker (you can’t). If you really want to impress girls, doing it and not giving a fuck what your sister thinks is more likely the impress someone, girl or not- but it’s not an ice-breaker.

This has been happening for decades.

What is a ‘scene’ in this context?

You can boil the logic down and apply it however you want. The fact is that different people have different levels of tolerance for bullshit and VPN users are a large source of it. TOR is also inherently harmless but exit nodes end up on banlists everywhere because malicious users use them to the point that exit nodes are pre-emptively banned in a lot of places because some people just don’t wanna deal with it. The big email providers have a zero-tolerance policy for the same reason; if your domain misbehaves even once then you’re on the shit-list forever because it’s not worth playing whack-a-mole with malicious actors.

Because shared VPNs are also used by malicious actors and some admins just don’t care about dealing with that.

Have you tried? Because Proton is the miracle people make it up to be.