Because if you were an starfish then you're still an starfish.
I'm going to have to disagree with you here brosef.
Releasing a private add-on? WOW YOUR LIFE MUST BE RUINED BY THIS starfish. No. He's obviously matured a bit because he hasn't pulled anymore of that stuff.
Posing as a girl? OH forget WHAT A richard! No. There's been plenty of people idiotic enough to do this who have remained here and remain pretty cool with the community (minus Sue, that's a special case).
Being banned previously? No. People have been permanently before and have appealed to Badspot or generally cleaned up their act and then discovered as an alt and allowed to stay.
I can however agree that him telling everyone that he is going to kill himself means he should be punished. He also said "k, bye", so two rules that usually result in a permanent ban have been broken.
He has indeed forgeted up his chance of remaining in this community however, considering if he is banned again then that racks up his ban count to the big 3 strikes you're out.