That would be incorrect. It refers to the embarassing shit people in the military do, typically right out of basic (boot camp). Everyone is a little bit boot in the beginning, you just learn to cut it out.
And no, the infantry aren't stupid. Thinking that qualifying as an Infantry Officer means your qualified to run the entire war is stupid.
You’re right, one should not need extensive ground combat experience or PhD level fluency on this topic to be equipped to identify that the war is in the defensive (my initial claim, still true), and changing the equilibrium requires a massive escalation from the United States (also still true). You can continue with your name calling, if you like.
And no, the infantry aren't stupid. Thinking that qualifying as an Infantry Officer means your qualified to run the entire war is stupid.