There's also the issue of users trying to downrank any polarizing site because they disagree with it. To pick an example, think of the search term "vaccine" and

There's also the issue of users trying to downrank any polarizing site because they disagree with it. To pick an example, think of the search term "vaccine" and how strongly people on both sides feel about it. Eventually, you'll probably end up with results for "vaccine" that have nothing whatsoever to do with vaccines because everything vaccine-related will end up downranked.