The question as phrased is a bit pointless, in the end it's just a dikk-measuring contest. For every meaningful issue, even the ones with obvious answers, you can find some "smart" people on one side of the issue, and other equally "smart" people on the other side. High-IQ people argue with each other on virtually every topic, in part because you can be very smart yet still uninformed, biased, or simply dishonest. The mere possession of "intelligence" isn't very impressive. Mensa is full of dikkheads who are doing nothing meaningful with their life and who you would have zero desire to spend any time around.
Would have liked to ask who are the most inquisitive Coli posters, the most intellectually honest Coli posters, the most fair-minded and moral Coli posters, etc. etc.