For this, I’m thinking maybe adding a second empty poll option box would hint that it’s for multiple options but with one vote? The ‘Single Choice’ + single box may be giving it a ‘one option only’ vibe. I’m not sure though, but I thought it might be worth a try.
If this gets flipped to a feature topic, I would definitely be suggesting putting that on the front page (maybe still default true as well). 
I was lured in because I misread @cocococosti’s post and thought it said ‘simple theme component’. Having re-read it, it says nothing of the sort. 
I’ve been looking for an ‘easy’ javascript problem to work on, and this one seemed perfect as it would benefit me too. I will keep researching.