The problem is with the first definition, if propaganda means biased intent, then the platform solution for removing propaganda would be that the platform would have to remove from the platform every video with biased intent.

For one that's a huge percentage of political video. Second, intent is unknowable maybe there's a Roblox tutorial made with biased intent. Third, it's not the platonic ideal of perfect video removal, it's each corporation deciding what counts as biased and I certainly don't trust them to do it in a way that I agree with.