Hello all, I am new to this forum but I must share my experience with Galaxy S21 so people will not buy such a rubbish device.
It's not a "height" issue... it's the angle that it hits that determines cracking.
I've dropped mine from a height of four feet, with zero evidence of such.
BTW, Corning makes Gorilla Glass, not Samsung, so you should post at the Corning site.
Honestly I never used a screen protector before, since I have never dropped a phone in my life. However, while browsing through Amazon I came across this one and thought it's kind of cool for the privacy reason. Unfortunately it's currently unavailable, but I'm sure there's others just like this.