The end of the "Be Nice" page says
In summary, have fun, and be good to each other.
This implies that being good to one's self is not necessarily required.
I've noticed a certain user with a pattern of behavior of abusive remarks to himself.
Consider this answer, in which he refers his own understanding, as the OP, as "silly."
In this answer, he attempts to swindle himself.
And in this deleted answer, he actually goes so far as to call himself a fool and a nitwit!
Should something be done to censure this user, or are his actions within accepted site policy?
As an aside, that user is smelly.