More chaotic evil. Personally I'm pretty close to chaotic neutral - varies over time, sometimes true neutral, sometimes chaotic good - and just outright attempting destruction of unknown third parties seems pretty far towards the "evil" side of things.
I would say destroying random things for laughs is chaotic neutral. You do random chaotic things not for pleasure or pain. He isn't doing it for a specific reason but because he can. That's neutral.
A chaotic evil would be destroying out of greed or hate.
Hmmm, dunno. The only evidence being reported is that they locked out the project admins then attempted to destroy everything they could.
To me, that's not a "neutral" thing. It seems like it was only luck that the rm-ing didn't work, else there would be a bunch more unhappiness.
People do run Gentoo on production systems. Though they obviously shouldn't pull straight from upstream without some real testing before deployment, in the real world it does get done.
> He isn't doing it for a specific reason but because he can. That's neutral.
If the action is to just do something harmless ("echo 'Couldn't have rm -rf-d you there!", then sure it could be seen at neutral. But it was clearly an attempt to destroy other people's stuff or work. That really doesn't seem very neutral to me. :)