My parents were English majors, and they met in Anglo-Saxon class.
My father described speaking Anglo-Saxon as being like cursing all the time. Everything is basic words like "shit" and "blood".
I think that's why some of the Anglish stuff (or Anglo Saxon class?) might come off as rougher, more basic, simpler, or more profane. It's really interesting (but also really sad) how nearly 1000 years can go by, yet a language can still carry the scars of oppression.
Anyway, that's just my thought, I'm no linguist or historian, so don't take my word for it.