Is Aaron's cursing realistic?

[Stephen]

Did anyone else feel that Aaron's occasional cursing was jarring? In many ways Aaron had regressed because of his trauma. He even called his mom "momma" at one point. It just didn't seem that someone with that mindset would be using curse words the way Aaron did.

[Grantos]

I can't even remember Aaron cursing that much to be honest but I'd assume that a teenager who has experienced such severe trauma would curse whenever he feels necessary. I also know that many therapists use freely cursing as an outlet for anger among patients so he may have been told to do so by Therapists.