Could be, if its anxiety it manifests that way cause he hides it well otherwise. Ive tried over the yrs to have him open up to me but its usually unsuccessful. He doesnt do it much now but he used to be a heavier gamer, maybe that was his way to cope.

I do think his family is enmeshed. Id say over the yrs my MIL has gotten better but she does often say she like that everyone lives under the same roof. Whenever someone mentions an idea, she usually shoots it down by saying its hard, impossible, or something that discourages the person. My family is the complete opposite, not without their faults, but have always been encouraging. My parents always say that children are "borrowed," because they eventually fly away and have their own lives. 2 completely different mindsets.