If you grab the tail of a dog and wave it to and fro, it is not likely that this will make the dog happy, even if it looks a little bit that way to an outside observer.

Likewise, trying to make a terminally online person* do what you think is normal (or even necessary) will not make them act or feel like you do, even if they're willing to go along with it for a while.

To use another animal metaphor, they'll come out of their shell when they're ready, but they may never be ready, and other people have to be OK with that.

* Of course, by "terminally online person" we should substitute whatever actual psychological diagnoses are responsible for the person acting the way they do, not what they do, assuming such diagnoses are even possible (or valid).