Well I have a simple formula just for this:

If they believe things I believe, like things I like and go to the web pages I do: they’re a productive, well-socialized chad ubermensch patrician. No online issues there, even if they spend 24/7 online they must need it.

If they don’t believe things I believe, don’t like the things I like, and go to websites I avoid: they’re too online, probably an incel too and likely a terrorist in the making and sorely need to touch grass and should have their internet connection stopped.