I've had many foldables and I've never broken them, and I'm not gentle with them, it's not in a phone case, and being dropped several times. I think if it was dropped in the open state that might be a problem, but when it's closed it's actually protecting itself.

In some ways you're more likely to damage a traditional phone screen since it's always on the outside and it's made of glass and more likely to crack when dropped.

There's no scratches on mine but it is a fingerprint magnet. That's what you get for having a plastic screen.