Can you explain why "the most professional armed services on the planet" have lost every single war they have entered into in generations?

For twenty years, "the most professional armed services on the planet" have been pretending to train the Afghan Army, and giving good reports of their progress.

And yet it only took a few days for that army to collapse.

Rationally speaking, the US armed forces are a bunch of incompetent, lying idiots who are incapable of winning anything.

Unfortunately, there are a lot of delusional people out there who believe exactly what they want to believe, regardless of the facts.