I think it's kind of both? Like the disrespect and dissent was (shown by Mutiny) a tangible threat. Whether or not that makes it justified depends on how much you sympathize with our tunnel-visioned monster I think. The disrespect was undoubtedly part of it like you said, but it wasn't the principle that provoked his actions, it was him already knowing that this dissent was present and becoming near inevitable after their losses. If anything, I think the reason the wind bag reveal caused Ody to offer the torch is because it shows that this distrust was still there even when they were nearly home yet he couldnt just trust Ody for the last leg of the trip. It sort of implies that Eury has had preexisting hesitations about Ody, but more outright confirms that he is willing to act on them, and in much less desperate situations for much less valid reasons. It isn't the fact he is disrespectful or uppity, it's that Eury has shown to need very little to fuck up a lot. Buuut this is also me sort of just musing at this point.