I have had a Z Fold 2 since release. It's still my phone.
Over the years that this thing has been in a desert, been dropped off tables on to hardwood floors, been in my pocket with keys, and has been in a humid bathroom with the shower on. This iteration has no official waterproof rating.
It's fine.
The casing is a bit better than scratched but the inner display is still fine. I even removed the screen protector they tell you not to remove, because frankly it became a mess.
The people who say they are fragile don't know what they're talking about but of course they don't they don't have one.
The problem is if they do break Samsung terrible at customer service. They will eventually agreed to fix the phone but only after having to go back and forth with them for several weeks solid. But that would also be true of a slab phone from them.