Couldn't disagree more.Never had a problem with screen protectors and curved screens. Probably because I can't stand them and never use them. Takes a lot of carelessness to scratch a screen these days.
I've had phone screens show light scratch marks within days of being new when I have babied the phone and made sure its in a pocket on its own.
All these claims of ultra tough glass IMO only apply to screens being shattered. It's glass, it will always scratch up pretty easily.