This is how your son sees himself and his situation. This is how he feels. This is who he is.
When you censor, there's a risk of either communicating that:
a) he's wrong about who he is or how he feels
or
b) that he's only wrong in sharing who he is or how he feels.
The latter is better, I suppose, than the former. You could at least couch it in "consider your audience" or "there's a time and a place." Those are useful social lessons. Maybe.
Or maybe you decide, as his parent, to stand up for who he is and how he feels. To resist censoring him in his communication of self. Of effectively saying "I accept you for who you are, no matter how you feel. And I love who you are whether you are happy or not. And I support you in sharing that if you want to."
