The years my kid lived at home were not easy ones. Finally it became obvious to us that it just was not working out anymore because everyone was unhappy so we helped our child get his own place to live (of his choosing). I cried my eyes out when he moved out, it was a very hard thing for me but we had no choice. I think it was the right decision. But that did not happen when my kid was your son’s age, too young in my opinion. We can’t worry about other parents who throw out their kids, we have to take care of our own in the best way we know how. and I agree we certainly cannot judge.
Hopefully you won’t have to make this choice, Write or Wrong, but I cannot stress enough how important it is for your son to have some sort of schooling/ parnosah so he can support himself.