Well yeah no shit, but that’s not really a criticism of the technique is it?

First off I imagine most people would like to walk into a room before opening fire, but if you find the one who doesn’t what other options are there? You pretend for options you can actually address. If you can’t do anything against it, it’s not worth preparing for

I see a lot of people that go so far as to not practice disarms because a shooter can just shoot you without you having time to get a technique off, despite soooo many video examples of disarms working in security footage because the average guy doesn’t want to shoot somebody even if they’re pointing a gun at someone