I found this thread as was reading an unrelated article on iPhone 12 Ceramic Shield
I find it incredibly odd that there are so many people stating how easily the iPhone 12 screen is scratched.
I got my 12 pro max at the end of January 2021 and is my daily driver. 5-6 hours of daily screen time, constantly popped into jean, shirt and jacket pockets, and flip between several cases.
Never used a screen protector though and in direct sunlight, when I clean the screen with an an antistatic cloth, its like brand new! No polishing scratches or swirls, no micro scratches or hairline marks, nothing!