As someone who has used the Samsung Galaxy Note Edge now for almost a month, I couldn't disagree more with this review.
Like the original Note 1, which most reviewers panned as ridiculous, I suspect the reviews are written from the perspective of getting their hands on a review model, rather than any in-depth usage. And how wrong those scathing reviewers proved to be when they rubbished the Note 1 3 years ago. EVERY manufacturer has now followed suit with phablets, even "a 4" screen is plenty big enough" Apple!
The edge is a glimpse of the future of smartphones - and I will almost guarantee this year will see a phone with an edge on each side. I find it amazingly good, despite the fact that this reviewer has problems using it one-handed. I can't believe the nitpicking over a few mm versus the huge extra functionality. By using folders on the Edge I have instant access to all my apps without taking up ANY room on the homescreen. I get notifications there - just look at the mail or Facebook icon on the Edge to see how many new notifications.
A surface 'skim' over the phone is no review. You've got to use it to appreciate it.
I did use it, and it's bad. I used it as my daily driver for two weeks. In fact I use all my review phones as daily drivers.
The main problem is that everything about the edge doesn't need the edge at all, as I mentioned. The handy app panel, notifications, etc. could just be implemented as 160px pop-ups over the main screen content with essentially no detriment to other functionality. As you would have noticed, in most apps you have to swipe from the right edge to get the edge panels to display. This gesture, and the edge panels, could be implemented in exactly the same way on the Note 4. It doesn't need a curved display, and might even function better with a standard, flat 16:10 display with 160px allocated to an "edge" just like this handset.
If you implement a new hardware feature, you actually have to USE it. Samsung did not do this at all.
The difference between the Edge and the original Note is that the Note was just awkward to hold and took time to get used to, but actually had decent functionality. There is nothing about the Edge that takes time getting used to, aside from getting over how much money you've just wasted on a curved display with few features.
You mention the notifications, but that's exactly what the Android notification panel is for. You can see in the status bar what your notifications are with ease. And I don't doubt we'll get a phone with two curved edges, I just hope whatever OEM does this actually makes use of it