Haha, actually it's the single most praised feature from our users :-) It's that benefit you get instantly, as typically the user "gets" it within seconds and really speeds things up. As I wrote in my lengthy comment, which I understand you might not have read, we will implement a gradual progression starting at the current layout (incl. delete key) up to the "power user" hexagon layout. You decide how far you're willing to transform your typing behavior :)
Well, it could be the "single most praised feature" due to selection bias or survival bias: People who don't like the feature dislike it so much that they never become active users. :-O (Here's a good video about that kind of bias: https://youtu.be/P9WFpVsRtQg?t=88)
The "gradual progression" sounds very neat! I could imagine that will make adaption far easier and make the keyboard much more attractive for people who aren't "power users".