I seriously doubt that they're talking about leadership when they say ownership. Otherwise it would make little sense because few foss projects are democracies anyway.

The thing is that this was his "answer" to what was really the quite reasonable question of "do you think this is ethical?" To start talking about this sort of thing is completely disconnected from the actual question.

Of course you can have discussion about these aspects of the open source ecosystem; this is a long-running discussion where many people have discussed and disagreed in good faith. I don't entirely agree with your take personally, but I also don't entirely disagree and can see where you're coming from, and it's of course an interesting thing to discus.

However, in this context, as an "answer" to that question, it's hard to see it as anything other than just self-serving post-hoc rationalisation for being a selfish wanker. This is classic nihilism where the abuse of everything and everyone is justified as long as you can get away with it. Everything that moves the needle and you can get away with is morally justified because it moves the needle and you can get away with it.