This may not be a popular sentiment here on FR, but I found his criticism of the withdrawal from Afghanistan to be highly disingenuous. Our involvement in Afghanistan was a fiasco for most of this guy’s military career, but I never heard a peep out of him until after we had fled from that dump.
And that's what set him off. If you haven't already, watch to the videos he's posted, he is quite critical of that withdrawal fiasco and the Commanders involved, it will clear any questions of why he has gone to such extreme lengths.