In my training stances you do at the range and where you put your finger on the trigger don't matter in a gunfight. Especially with a pistol.
He isn't a sniper.
You are right and wrong.
Right about stance becuase it is going to be fast and you may not be able to pop to your trained stance.
Wrong about finger placement - If you train properly the finger will go right where it should be to allow foor good shots.
Sniper comment is totally nonapplicable since sniper are not usually in a fire fight and have the luxury of time. And it is a telling statement that shows your lack of knowledge and GOOD training.