And you might want to interact with the product you're bashing before you talk so much shit about it. I own a 4 year old Z Flip I bought secondhand two years ago and I love it. I work in a mechanic shop and this phone has been dropped on concrete many times, had tools dropped on top of it, had chemicals spilled near or on it, been caught in the rain, and besides all that I open and close the fold a couple dozen times a day most every day. I put the cheapest Amazon phone case I could find on it and to date, I have developed a nearly invisible hairline crack in the very center of the fold that you can only even notice when the screen is off, and one tiny crack in the corner of the front screen that doesn't fold. Whole phone is mint otherwise. It's been incredibly durable over the two years I've had it, far above and beyond what I even expected when I bought it. And being able to fold out the screen for reading or watching videos, or gaming, or comfortable texting, is excellent.

Your point is taken in that yes a flat screen phone won't have a folding hinge that will eventually wear out. But my phone has lasted me two years, after being bought used two years after its release, and I expect an easy 3 more before I end up replacing it so long as I don't drop anything too heavy on it. I consider that a fine lifespan for a modern smartphone. I'll probably never go back to a slab phone unless I don't get a choice when the time comes for a new one.