I think part of social awareness is coming to understand the audience you are interacting with. .. .. I wouldn't be understood in each context unless I could adjust my interactions.
.. It sounds to me like he's trying many things to successfully interact with other kids. As long as he doesn't forget how to write with correct spelling, I don't see the harm in it. .. I doubt he'll forget that he's brilliant from writing intentionally wrongly!
Agree totally. I do the same thing. If I go full on with most people, they just go numb and there is very little comprehension. Keep it short and simple and in the vernacular.