So what if the tone is good. The arguments that he made are not supported by the evidence.
The fact that the paper is written in a scholarly tone is obviously relevant. If it was spam or "junk mail", or some sort of violent sermon or political philippic, then of course there is no reason for it to stay online. But it's not. It's obviously a real, genuine academic paper.
It serves no ones to repetitively rebut the same mistakes over and over again. While at the same time such papers lend false credibility to damaging ideas.
What do you think about this retraction?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831678/
Much like "free speech", the specific things it's used to support and not support is often more revealing than the claimed position itself.