To follow up I had a re-look at the build dialogue to refresh my memory.
As you can see there is no misleading setting for Ranked Choice on the form. So the bug is not here. I respect it remains visible on the markdown shell for Polls and that could lead you to believe it might have an effect.
I think this is fairer as a Feature request. Moving it there.
I’d be happy to work on it if hired to do so (I’m not a member of the Discourse team and as a freelancer not paid a salary, time is money … ), consider posting in Marketplace or PMing me direct for a quote if this is important to you. I’d be very happy to PR if acceptable.