It’s interesting that some of us have worn watches with this glass for the last 5 years and not had that experience though. Dodgy batches perhaps? Poor quality control when checking the mechanical properties of the screens? I don’t have the answers to those but I do know the Ion-X Glass on my Series 2 and Series 5 has been plenty durable enough for everyday wear and resisted scratches very well.
Currently my Series 5 has been on my wrist pretty much every day for the past 2 years and not a single hairline scratch that can be seen with the naked eye.I am pretty sure if the glass scratched with a slight touch, I would have at least one by now or in reality there would be several hundred thousand scratches.