I’ve always noticed in movies and TV that henchmen are usually pretty stupid. It’s what you get when you micromanage - the stupid ones that need it.
Another example. A contract group hired to wire several buildings of new offices miles apart. I was consulted to see what they were doing. The lead contractor refused to show me any of his project plans and work in progress. Because it was a mess. He had scraps of papers in his pockets as notes, and got them mixed up or lost some. Not only that, he was bringing in his young teenage son to do some of the wiring. His workers (henchmen) were young inexperienced novices. He got pushed out the door, and me and a group of techs had to come in and correct all the wiring snafus without any documentation of what had been done before our intervention. Every wiring closet, every offices' outlets on every floor was wrong.