really would probably be easier to just do "traditional pagerank search" or "fact rank search". Looking at both would give a nice spread of information, and shouldn't be too hard to manage. or, as you said, bring back the damn qualifiers. Those made life much easier.
I think one issue is that most websites that posit fringe theories don't posit any evidence at all. It isn't like there is a climate change denying website that posts ocean temperature data and land data along with relevant analysis that shows the current analysis is wrong when looking at a different data set. But when I do search about climate change, I would love for websites that walk you through the current data and how it is analyzed, without all the "hockey stick" pseudo controversy.
And of course, we assume google is trying to be some great arbiter. Instead, it is trying to get the information it's users are looking for to the top of a search result. I certainly hope people doing real research don't use google for data gathering. There are proper journals and forums for that. But me, as a non-professional with a random interest, don't know any of that.