It sounds like this is a case of emotional incest.

I really, truly hope your mother kicks him out for her safety. Guys like this need a genuine taste of life on the streets to get better. I…

It sounds like this is a case of emotional incest. I wrote something similar in my Medium, but I think your brother might be the instigator.

I really, truly hope your mother kicks him out for her safety. Guys like this need a genuine taste of life on the streets to get better. I say this as someone who was on the streets.