I agree that x-risk reduction is a lot less popular than, e.g., caring for the blind, but it doesn't follow that people are strongly biased against caring about x-risk reduction. Note that x-risk reduction is a relatively new cause (because the issues didn't become clear until relatively recently), whereas people have been caring for the blind for millennia. Under the circumstances, one would expect much more attention to go toward caring for the blind independently of whether people were biased against x-risk reduction specifically. I expect x-risk reduction to become more popular over time.