Think of it this way: if you ride your car onto a curb, do your tires wear evenly? Of course not. Where the tire is on the curb, you will see more wear. There will also be a gap where you see no wear at all. The bottom of the tread will also be worn. The enlarged images only outline what the others have told you. You honed onto the stabilizer which has changed the original honing angle just enough to create the flat spot that has the "original grind marks." I did the same to many razors before I realized what not to do. The advice being given is exactly correct.