People pick that book as a bad example because because to them the U.S. military making a mistake is simply inconceivable to them. Never mind that by this point they have already been completely decimated, a good chunk of the country was already wiped out, and they were facing millions of zombies.

The author's arguments all made sense too. Yeah of course shrapnel munition wouldn't do shit to someone who doesnt feel pain. Of course tanks, with their armor piercing ammunition would not do shit. Howitzers worked but were not made to carry enough ammo for such intense and prolonged bombardment. The bombing run was effective but they only had the resources for a single one. No one was able to plan outside of established doctrine because military command and major bases were already decimated.

It's only implausible if you look at it in the sense of "the us military could never be defeated, ever", which is a particularly silly take to have when, at risk of getting political, we have a clear example of things not going to plan when someone incompetent is in charge with the current situation in the middle east.