In canon Ed has the worst homelife.
Ed’s mom clearly physoclogically, verbally, and possibly physically abuses Ed.
Come on, where did Ed learn this off from?
Ed has references his mother many times and she is clearly a horrible person. She gives more attention to Sarah clearly favoring her more.
Look at their rooms. Ed lives in the dirty basement. His room is always a mess. It’s implied that nobody ever visits him down there. Sarah has a lavish room that is all decorated.
Ed fears his mom.
This was a scene from the nightmare episode. Yes, it turned out to be Jonny in the dream, but before that reveal Ed was falling to his knees begging for his mom to believe that he wasn’t doing anything wrong.
If a child has to do this there is abuse written all over it.
Ed’s mom never takes Ed’s side. In fact she doesn’t want to deal with him. She sends Sarah to yell at him. In an episode where Ed had to clean his room Sarah tells Ed she’ll be back in five minutes because mom said she could.