Really depends on what you do with the open phone. I can understand it being a huge distraction when watching video with the seam right in the middle. EBook reading? Apps in tablet interface mode? Might as well complain that using two monitors on your desktop is unusable because of the bezels. Doesn't matter in practice.
> EBook reading?
> Might as well complain that using two monitors on your desktop is unusable because of the bezels.
There's a pretty important difference there - monitors don't draw content on the bezels.
If what you're doing is reading an ebook, what advantage is a folding phone supposed to have over a non-folding phone? Reading isn't an activity where you can use more than a small part of the screen at once.