Has nothing to do with S&W pistols.
You are anticipating recoil and dropping the muzzle.This is more common than the cold for new handgun shooters.
You must learn to keep the sights aligned until after the recoil, not until just before recoil, follow through.
I think you are correct. Usually I see noobs yanking the trigger - so lefties going low and right. But given what this person has described, I think they anticipating the recoil.
The Shield is not the best gun for new shooters.
