I'm going to write a rebuttal (because of fucking course I was) but I want to lead with nothing you said is stupid or wrong per-say, only the product of outdated and inferior training then what is available.. When I did cop things I was taught the exact same stuff you just said, and I occasionally still run into people commenting in my own courses the same stuff. You are doing good and I sincerely don't say what I'm about to say with any hostility.
BUT...
It doesn’t matter if you've always used the slide release to drop the slide on a reload your whole entire life and have done it thousands upon thousands of times, when the shit hits the fan and you're schucking and jiving like a junkie in need of a fix while holding a jackhammer, you ain't finding that itty-bitty pad of metal with your thumb and having the coordination to press it down quick, fast, and in a hurry the very first time like you'll need to in a reload under pressure.
Is wrong. Very wrong, and very dangerous of a training philosophy.
A wise man once said:
But that same wise man also said all of this:
mps
You should train to do things
right not
dummy proof, because being stupid is a choice and you are not stupid. The micro/macro movement logic is not true, and it isn't how adrenaline works. You've probably heard people recount truamatic or dangerous moments with phrases like "time slows down" and "hyper fixation" "staring down a tunnel at the danger". When you are being shot at one of two things happens, you panic and divert all power to lizard brain, or, you fall back on your training.
What I see all the god damn time in my classes is (boomers in particularly) hit a wall and begin to justify their lack of performance with adages, fudd lore, or logic that excuses their issues.
Train using the slide release, so that when it comes time to use the slide release, you find it. It is the superior method because then the palm of your support hand can apply pressure to the magazine ensuring it seats and has an index point to roll back into your two handed grip. This is substantially faster and makes sure you keep perfect muzzle control. Shoot both eyes open so that you can learn target focused shooting, with or without irons this is faster and more accurate. Don't give yourself credit for bad shooting because it "would be in their chest". You need to put on in the T-Box or heart to make sure they don't get a turn on the trigger.
Your performance will indeed drop drastically when the pressure is on, the first time, but you put that pressure into your training regime when you are ready to and you will shine when the time comes. If you've read my long rambling guide you know that I don't really introduce people to shot timers until a bit down the road in training. My expectation for a student or pupil is to have certain skills at certain proficiencies before I start making them nervous in any capacity. Knowing our performance will drop, we set our training standards very high. Knowing we aren't going to start off being very good at this, we are very patient in meeting those high standards.
When you learn anything, especially shooting, learn it the right best way, not the shortcut cut way, because having to unlearn something is going to be much worse for you and your pride becomes attached to the non-skills you've developed.