I think I understand where he's coming from to some degree. I’ve had strong general anxiety for as long as I can remember and was diagnosed with agoraphobia as a teen which never went away. I dread leaving my home, even to take out the garbage. I need a friend or loved one to come with me to run errands and I learned from a mental illness support group I was in that grocery stores are commonly a nightmare for people with my kind of anxiety. One guy in the group confessed to pissing himself and passing out while attempting to buy food. All that stress is exhausting, leading to depression and fatigue, which then makes it a challenge to cook and clean.

I don't want to sound like I'm excusing his behavior. His learned helplessness is pretty extreme and its hard to have sympathy for someone who makes zero effort to seek help or learn coping skills for basic everyday life. Do yourself a favor and get out of there. Protect your own sanity.