Sadly that's how things are right now and that's not gonna change soon.
I didn't know you can get fired (or not get hired at all) simply because you live with your parents or because a boss just doesn't like you... that sucks and it's one of the main reasons I'd rather work on what I like, online.
I guess there's no way to make people see how stupid their belief is (that you need to move as fast as possible) and those still living with their parents will be shamed for that no mater what they do.
RE: There is no shame in living with your parents