I think it's extreme.
YES, some people use the internet to an unhealthy extent, using diapers to avoid having to go to the restroom, spine damage from being hunched over all the time, becoming out of touch with IRL people and socialization to an unhealthy degree, becoming "cruel" or resentful of anyone who tries to take them away from the internet, etcetera, but what the one guy said about loneliness is totally true. I think that if someone is this bad about their internet habits, it's probably a lot to do with social anxiety, loneliness, or some other mental issue that needs to be dealt with. when it goes that far, there's a decent chance it's like the one guy said - they're losing themselves in a world that's easier for them. Sometimes this kind of escapism is therapeutic - it's half the reason most of us roleplay is to get that escapism. But if it gets so obsessive and takes up so much of their life that it's severely affecting their physical and mental health, that maybe monitoring their internet time, restricting it a little, helping them to find activities they enjoy that don't involve screens, maybe a mental health counsellor if it comes to that, are better ways of dealing with it than locking them in a prison/military style camp. Most of these cases are teenagers - minors, right? So their parents should step up and enforce this shit, and if they can't, if it's too much to handle or it's just not working, then get help - a counsellor or something, but don't ship them off to freakin military drill camp where they're taught that the greatest tool of our generation is making them sick!