I watched two youtube videos about them, one about Motorola and the other about Samsung.
They’re expensive.
It isn’t glass. It’s plastic. Scratches easily.
The Motorola doesn’t close completely so dust gets in when it’s folded.
I concluded the problem isn’t so much in the folding screen (which is supposed to survive a quarter-million closings, and couldn’t be tested), but these other factors.
For what they cost, the shortcomings are rather off-putting.
https://www.youtube.com/watch?v=bbAkY-Www40
https://www.youtube.com/watch?v=Eokt7DWljtU
A quarter million isn’t a lot if you think about it.....................
Jerry did another video for the Samsung Z flip, in response to Samsung’s response to his first video. He discovered that there is an ultra thin layer of glass, under the top plastic layer. He concluded that the feature was still poorly named, and not very useful, since even though that layer was glass, it doesn’t deliver the “glass experience” that people expect.