By this logic you would need to remove nearly all poll options. I use half of these units quite regularly, and see people use the other half nicely, i guess it's just your problem that you can't use any of them
I never voiced my opinion on the majority of these units, to be honest. I just put up what, from what I see, are the most commonly picked up on units in the forums.
I would throw in Sturmtiger, 2cm Flak emplacements, PWerfer.
Maybe even stuff like light AT mines, or Urban Defense booby traps, etc...
I left out buildable things, but if you actually read my accompanying post to the poll three of those things I gave an honourable mention to.
Also,
booby traps? Sure, they're a bit more expensive than a demo if you're soviets (or substantially less if OKW), but they're still a demo charge explosion style mine that aims itself.
And for the Pwerfer, it's not god awful like partisans. Sure, it's in a cost prohibitive tier and not as good as some of its contemporaries, but it's not terrible.
Admittedly I'd have probably put it in the poll at the time if it hadn't slipped my mind, but I'd still disagree with it being terrible. Much like I personally enjoy ostruppen.