The title is not a reference to OP's apology, he knows his level of sincerety, I take it as sincere, as I do not believe he is an insincere person.
I really do want to apologize for tone, but not content.
I post very little, preferring to read what others think, since I already know what I think! There
is a double standard, but perhaps I made too much of it over the course of last night's posting.
So, I sincerely apologize for tone, but not content.