Chris will be like a big sports star deciding on where to sign.
Plus if the people that run the home know who they have, they can charge admission for people to come in see the one and only Chris Chan.
I think you vastly overestimate the situation in which he would willfully admit himself to stay in a group home of some sort (and group homes do not really work that way you describe, they allow people to have a certain degree of freedom, but their finances are monitored and they have a fixed schedule and set of rules to keep them in line, but it can differ from each group home of course).
He's an individual that whilst not completely free of independence, by still having his mother around, has perfectly managed to do basic day to day tasks with relative ease. He has been in contact with psychiatrists in the past and they didn't exactly think he had any serious mental health complications to the point were he is incapable of looking after himself.
He would likely have to cause some sort of threat to harm someone or put his life in danger in order to be picked up by the state and thrown in a tard home, and even then, the chances of that happening as we see things right now are slim to none.
While yes you could argue that he has made some incredibly daft decisions in the past, such as literally believing he had a vagina growing inside of him, and paying up six grand because he was extorted by thinking the idea fags were gonna blow up his fictional world with a moon laser. These have been isolated incidents, and whilst history has shown that Chris is really not the sort of person to learn from his own mistakes, nothing has happened so far in recent years that's put himself in any determinatal harm without a tard wrangler, the dimensional merge bullshit could just be delusions of grandeur because his life is generally shit and has little to no actual "friends" he can hang with, as far as we're aware.
Now I am not necessarily saying that without a doubt it may never happen, it would literally be a situation in which Chris would have to be in such a fractured mental state that no amount of watchmen/white knights would do any good assistanting him by finding adequate housing, having enough money to buy things or simply preventing him from getting sick and dieing.
If the going gets truly tough for him, then basic human fear would kick in and he would get freaked out by having to deal with any impending problems, and try to live his life with all his toys, vidya and other crap for as long as he can.
It could take years and years for him to literally reach a point that he would have to be admitted into a group home, but as far as things stand now, Chris wouldn't need to and not only that, but he wouldn't want to, he doesn't think that anything is actually wrong with him (aside from bring a little slow because of his autisim).