Armies want to plan for wars, not police actions. SF forces now number over 75K so they just suck resources and get all the cool stuff. They don’t follow the same process. Even with that size, when Rumsfeld went to the Army staff and asked for an Afghanistan invasion plan, they threw him a book for an occupation force of 500K. Which was the correct doctrine, and one that had a remotely possible successful outcome. Rummy was outraged.

So the CIA chief told W “I can do it A-teams and some SF units” and thus started a 20 year lost cause and the regular Army generals had no doubt it would be.

The existance of any SF units causes a bias towards simple solutions and silver bullets. Solutions that multiple Presidents and DoD secretaries believe. Real generals just roll their eyes.

A Green Beret I met in the 80’s referred to Delta as “glorified door kickers.”