The author is correct in that a conventional battle with police or armed forces is a loser for civilians, especially on the civilians’ front doorsteps.
What the author fails to point out is that there are more effective alternatives to standoffs and conventional battles.
Conventional battle with the military is a loser, not so with the police. Take a look at Ukraine, where SWAT teams are surrendering, and those aren’t pissed off American patriots.
Ol’ Che may have been a commie/marxist thug, but his guerilla warfare book was a fascinating read.
What the author fails at is basic math. Disregarding possible desertions, the USArmy could maybe, possibly, muster an army of 1,000,000. An Army of one million means a fighting force of 300,000 with a 2:1 ratio of support troops to front line combat troops. The US Army would be hard pressed to subdue Texas with only 300,000 combat troops let alone an entire region of the USA in open rebellion.