In point shooting looking for, mentally waiting for that dot's verification that now it is OK to shoot, is what slowed me down and took my attention off the target. Looking for the dot was an extra step that didn't increase or decrease accuracy. Just made me slower taking the first shot and slower on subsequent shots waiting to see the dot first.
I really don't want anything to slow me down when responding to a threat that is within 3 to 6 feet from muzzle point shooting only distance. Any hesitation on my part at that distance gives the bad guy an opportunity I don't want him to have. And if I train to look for the dot then fire that is what I will do when I shouldn't.
Came back to add:
We are all different so the best we can do is keep what works for us and discard that which doesn't work.