He's received a 30 day ban from Eve which makes him ineligible for the next CSM, the one he won with a landslide 10,000 votes. He's resigned as Chair of the current CSM. He also apologised both publicly and privately to the player concerned and sent him the contents of his wallet (10 billion isk).
I think that's pretty fair. Everyone does dumb things and in this case fortunately there were no repercussions. In fact the miner is probably a little bewildered by all the sudden attention.
The only stronger action that could have been taken was a lifetime ban or calling the police. I don't think a lifetime ban is appropriate because I think CCP is partly to blame. It's a really bad idea to mix public streamed broadcasting with a culture of getting paralytically drunk. As for the police that should be a matter for the victim, if he doesn't wish to press charges the matter should end there.
I'm sure too that The Mittani has learned a lesson and I hope he continues to enjoy roleplaying a villain without letting it cross over too far into real life consquences.
Eve is a brutal pvp sandbox with no safe zones (other than staying docked up). Highsec isn't a safe zone it's a pvp is punished zone. However it does attract a lot of players who are quite happy doing their own private introverted thing. Possibly the game could do more in the New Player Experience to help people understand the nature of the universe they're entering.
As for the Mittani I'm sure he'll continue to make headlines and I imagine he'll be Chair of CSM 8 if he's still interested (and if his wife lets him).