Let's first discuss problem with your understanding of the poll. You got it wrong. You concluded there is 63% support of not changing the game. Which is factually wrong, because you can't draw this sort of conclusion from that poll - it was never asked. The overall question of the poll is "What changes you want see in classic?" And using your own logic, the conclusion is, that from all features in question, people want change 37% of them, 63% keep as it was in Vanilla - and this is very different picture. So maybe you have good grasp of statistics, but you got this one completely wrong.
Even what I said is not actually 100% correct, because lot of questions are still inside the margin of error, it can go either way. So only thing we can really say is that people want change some things in classic and many questions are very polarized, so this is up to discussion.
For bias thing..well, everyone is biased, but that's beauty of science and statistics. You can believe what you want, you can read statistics in many ways to somehow fit it into your bias and agenda, but there is always only one correct way, how to read it - what poll is telling - there is no space for arguing, because everything is in the poll. And you somehow want twist it into something else, you even used democrats and republicans into it and how they look at polls without - it just show you don't understand it at all because these parties are always trying twists facts into their agenda.
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Why do you care? Not everyone sits on forum and read everything. Maybe someone has this awesome idea that transmog in Classic would be awesome, want ask the community without realizing it was asked 100 times just this week alone and it is in fact shit idea. You can tell him, he should just use search feature but even this is flawed, because necroing old threads could get you banned. If you have no nerves for these things, you shouldn't be on forum anyway. You made your point clear, you want Classic to be pure Vanilla.. alright, noted, now if you don't want discuss it any further, just don't join threads like this. People go into these thread to just shut them down and attacking posters in the process.