I’m Italian descendant, so it’s normal for multi generations to live under the same roof. My cousins share a house with their parents in Italy but they can afford to have it converted into two large conjoined houses. They have very successful careers and lives. With the cost of living rising, it’s going to become more commonplace.
My issue for me isn’t necessarily Gary living at home; times are tough and are getting tougher, but his attitude towards his situation. The relationship with his parents is not equal, he is still a child, they still do everything for him; cooking, cleaning etc. how he only hangs out with people 10+ years younger than him (and expects them to look after him). He has no interests normal for a man his age. it’s all ducking bizarre when you add it up. None of this is due to anxiety.
it’s also his reluctancy to improve his situation. When people suggest jobs on his live he just ignores them or says he wants to focus on his art. There is so much not right with him.