You've misunderstood my point. I'm disagreeing with your idea regardless if such a "single person" is me or not.

My point is that "if someone with sufficient voting power to vote over the return proposal exists" I disagree that everyone should then vote for the return proposal to raise it in the name of decentralization, because that person may just not vote much at all. And even if they do and vote on some proposal that no one else likes, then people can just vote up the return proposal at that point in time, so it is just as decentralized if they wait or if they proactively vote.

Being proactive as you suggest in this case, can have negative consequences, if the "powerful voter" just doesn't vote at all or not as much as other people think is reasonable.