There are people that wrongly claim there is no use or carry over of skill from competitive events and equipment to “real world” or other places.

Here’s an example of a skilled competitive shooter using a Remington RM380 subcompact .380 pistol shot from concealment.

Here is another top competitive shooter demonstrating with his actual carry gear:

Many of these defensive/tactical classes are a few days long. Is anyone so stupid as to believe a person with well-developed, demonstrably higher skill such as this couldn’t absorb that knowledge as well or better than anyone else taking such a class, especially compared to the novice-level shooters in attendance at such classes?

What makes you certain this or any other competitive shooter hasn’t already learned and studied such skills? Just because a specific tactical idea wasn’t tested or demonstrated in a specific range exercise or competitive event doesn’t mean the competitors aren’t aware of them.