My argument is that it's not anti social. It's maybe less visibly social, but being in a group voice or video chat while playing board or video games is definitely a social activity. Or building something together - computers enable us to engage in storytelling and art in ways our ancestors could only dream of.

Yeah, sure, they aren't social in the same way you were. But you weren't social in the same ways your parents were either. Calling the younger generations antisocial because they've fully embraced technology as a core part of their identity smacks of patronism to me. Kids these days with their rock and roll, so antisocial!