The poll is useless. If he wanted to step down as CEO, he would have already made up his mind and had the next CEO lined up, using this poll as a formality. Had he not intended to step down, then it seems to me he won't abide by the results of the poll.

It does seem very likely that he had already decided to step down, and that the poll is simply yet more publicity.
The question is, who would want to take over, given that Musk is still, of course, the owner?

I think he will simply put his own man in the CEO chair, but still will be the main influencer in Twitter. Why work himself, when there are a lot more to achieve and earn.

In fact, the poll does not mean that is really going to resign as Twitter CEO. He might be trolling everyone again. Look how much hype has has created around Twitter with that tweet.

So it is just social propaganda? But you have a point that he may step down as a CEO but still, he is the main owner and influencer on it so it is just the management is new. I think he steps down because he is too busy to manage twit since he has Tesla and SpaceX that needs his brains and effort. I've also heard that he is still in control of the servers and storage. So still he can access that data on it and maybe the CEO is kind of a puppet on him