> bc the device needs to double its thickness
Considering how many people are dailying >6.8 inch phones (already massive in the average sized pocket), complaining about a thickness of 11mm* is just small brain behavior. I guarantee the weight is what you're noticing more than the thickness.
As someone who's into foldables but doesn't use one, the benefits are very real, especially if you read a lot of articles/blogs. Only reason I'm not using one is I can't afford the ones I want. How is a smaller phone, that's ideal for 1-handed use while having an expansive screen available at any moment, "running out of ideas"??? I like large screens, and I like being able to fit it in a small chassis. That's all it is.
* Samsung, Oppo, and Google's currently available foldables are all under 11mm