Don't buy crappy lasers then and get a real 1!I never line up with iron sights, visually, or with one of those crappy lasers. I put three on target and adjust. It’s rare I have to adjust more than twice. One of the real keys is understanding how much you need to adjust your elevation/windage screw. Most red dots are 1 moa adjustment - 1 moa = 1 in at 100 yds. At 25 yds that 1 click adjustment is now 1/4, so to move your dot two inches at 25 yds you would require 8 clicks or at 10 yds approximately 16 clicks or over a half a turn. The adjustments in the 10-15 yd range are typically big ones - anywhere from a quarter turn to 3/4. Too often people adjust two clicks or 3 clicks and nothing happens. Or like the genius in the video you crank and crank and crank and basically put yourself in the mirror situation. Zeroing a pistol red dot is not hard, but you have to understand how your respective dot works.
I always zero from a rest. If I had one of those shooting sled/ vices I’d use it. I shoot well enough but I believe that when zeroing you should eliminate human error as much as possible to rule out it being the gun when your groups suck.One must add, if you are a crappy (or new) shooter, zeroing any sight type on a pistol is nearly impossible without shooting from at least a rest, better yet a vice. Once you are an accomplished pistol shooter, the rest is not needed...but it makes it faster. Actually, this holds true for any hand-held firearm...except for Bob with #7 pellets out of a 5" shotgun barrel. If you read the fine print under every pistol "review" in The Armory Life, all are shot from a rest (that I have read).
I only add this because even the best shooters have flyers due to shooter error.