Mitchell Heisman starts off by saying

If my hypothesis is correct, this work will be repressed. It should not be surprising if justice is not done to the evidence presented here. It should not be unexpected that these arguments will not be given a fair hearing. It is not unreasonable to think that this work will not be judged on its merits.

This is obviously false - it's up on the internet, it's gotten some press coverage, it quite obviously has not been repressed. But he is right that it won't be judged on its merits, because it's so long that reading it represents a major time commitment, and his suicide taints it with an air of craziness; together, these ensure that very few people will do more than lightly skim it.

The sad thing is, if this guy had simply talked to others as he went along - published his writing a chapter at a time on a blog, or something - he probably could've made a real contribution, with a real impact. Instead, he seems to have gone for 1904 pages with no feedback with which to correct misconceptions, and the result is that he went seriously off the rails.