Which is completely irrelevant to dealing with a person (or multiple people) crowding the door, since it makes it difficult to even toss a grenade past them.

A “wonderful” thing about the internet is that you can complain about “x” and somebody inevitably crawls out of the woodwork to say “Um but acktaully I do ‘y’ and it’s a good thing.” Awesome good. Cool. You pie and throw grenades. That has nothing to do with the people who indecisively crowd a doorway with no plan or goal.