It is not. Despite this enticing thumbnail:
Let me save you some time: This guy manages to stretch a couple minor inconsistencies or contradictions in the documentary Tread for an hour and fifteen minutes by playing Killdozer's advocate. I will say that he does a reasonable job arguing for Heemeyer's perspective in his disputes with the Docheffs and the city. However, he does omit some details and indulge in some cherrypicking to do so. He is fully committed to painting Marv Heemeyer as a reasonable man, and by the time he gets to the actual rampage, he lapses fully into fanboy mode.
See, he'd done a passable job painting Heemeyer as a reasonable man, or at least, not quite the town crank, right up until he starts building the MK Tank. At no point does Heemeyer run into a situation where he is forced to do unreasonable things. He makes absolute bank selling his property. He could've left town and started over anywhere else and never have to worry about the Docheffs or Granby's sewer lines again.
What actually changes is that Heemeyer starts believing that God wants him to bulldoze the town, and sees the total lack of anyone or anything stopping him from building the Killdozer as signs from God.
A rEaSoNaBlE mAn
I could go into more detail but Lore Lodge does an embarrassing amount of arguing in favor of Heemeyer being of sound mind and harmless at this point and frankly, I think this sums it up well enough.
