This seems to be the case from what I've seen and from a quick check just now.

Is this intentionally so? Is it likely to remain so?

Not that I have any problems with it. I'm just thinking about trying to run a poll through lemmy's current features (where native polls are in the roadmap anyway). And I figure, for simple polls, a bunch of comments for each option in a locked thread where people can only up vote would roughly do the trick (except that a voter would know the results ahead of time).