I feel like there's a few steps missing there. How does it go from "a new person joins the community" to "he's able to nuke everything"? Sure, he might be reasonably well-known, but in the post it doesn't sound like he was a core maintainer, or even a very active community member. Do they just randomly hand out admin access to anyone?
And it didn't sound like he was able to "nuke everything" - it sounds like he had access to their repository infrastructure (which is reasonable given he was volunteering to host it) and then lashed out.
If anything, I think it's a bigger organizational red flag that they agreed to privately host their source code on some random git forge and not a larger, more communal one. I mean, even if they didn't want to use GitHub (did this even cost money for them) then there are other providers to choose from.
It just sounds like the Mandriva maintainers are trusting and good folk who may be overworked running an open source project and that led to a bad apple entering the bunch. It's hard for me to be mad in that kind of situation.
What's unclear? This guy was part of the project for some time and got maintainer trust. Then he brings in his mate. His mate is a crap person and gets kicked out of the project. The original guy then goes bananas and nukes stuff.
Every time someone actively approaches you with an offer to spend their real energy and lifetime on your thing, It's almost always about leverage in some way.
At least if there is actual work attached to it.
Money alone might be paid by people that just have too much of it or want to feel better about something.
But if they actively involve themselves to a degree that goes way beyond scratching their own itch, something's up.
You might get lucky and find a just genuinely good person, but you might also not.
but i think "linux distributions are dangerous" is the wrong conclusion. the right one is to treat each distribution based on their own security practices, and not "linux" as a whole. one distro's bad practices doesn't make others unsafe any more than one distribution's good practices make other safe.
Good security architecture has circuit breakers, even for people who are generally high-trust.
I'm so glad the project is still around.