Where the activity can be distressing or malicious in terms of jealousy and trolling

Online gaming too, severely too. Maybe even more. But, it is closer to irl communication.

1.) Boys too.

2.) It is not socialization with active voice chat. That is more like writing letter or something like that. It will do less to make your brain feel like you have social connection.

The thing that is supposed to make difference (according to psychologist that had talk about social isolation) is talking. People who call have similar psychological results as those heavily socialized. if you write mails a lot, you reassemble lonely people more.