It's just a lazy effort by the OP to advertise their site. As others noted, they list some scams and don't list some known reputable sites. The site says "bitz.gg" when you open it. Looks like they rebranded to a different domain but didn't bother to change the references. Don't give them any traffic, not worth it.
It's true and didn't even add other dice site in their poll. It seems it's an advertising of their site. If not then they should just create q poll here in bitcointalk forum. Also, op did not yet answer the question about how did they come up with the site listed on their poll for voting (i'm curious).
Don't be curious with this kind of fake poll(s) and don't waste your time waiting a serious answer from Op.
The only purpose of it is to promote both their "poll site" and their gambling site, which in most cases (if not all) is scam.
As mentioned earlier, not worth it.