From the Apple website:
"Tough is great, but we also wanted to make it scratch-resistant. So, using our dual ion-exchange process we use on the back glass, we protect against nicks, scratches and everyday wear and tear."
They advertise scratch-resistant against every day wear and tear... it simply isn't true. It does not even compare to older screens in the wear and tear department....It is supposed to be break resistant and scratch resistant.
This is my fourth iphone starting with the 4S and then the 6Plus then the 8Plus and now the 12 Pro Max - I keep them for 3ish years then upgrade. All previous versions no scratches on screen and have never broken a screen. New 12 Pro Max - scratched in 3 days of inside home gentle use - not put in a pocket; not put in a purse; not dropped; not treated roughly; big scratch on screen - from where I have no idea.