I am enjoying this conversation. And I hope we can always agree to disagree. The problem with the proud haft and splitting is twofold:
First, what wood you are splitting matters a great deal. Lets take the example of Emory oak. Oak, and many other species, do not split clean. They leave many fibers hanging the stick together. While it is true that "the crack is as wide as the axe and the haft is narrower" The problem is that on wood that hangs together the sharp fibers still holding eat at the haft on each repetitive swing trying to finish the split. I wish I could show you a picture of my favorite splitting axe. I rehung it with a hand made, air dried, riven, shagbark hickory haft of vertical grain sap wood about 1973. Up until recently, I have heated exclusively with wood. So the history of my splitting axe is; 10 yrs with 6 cords per in VA, 3 yrs with 3 cords in NC , 10 yrs with 12 cords in CO, and 25 yrs with 12 cords in MT. The above mentioned haft, under the eye, is now eaten about half way thru from the problem I mentioned. There is no damage to the top of the haft because it is cut flush. I still use it for a little splitting now and then, because I still trust it. And none of the eaten haft damage was due to over strikes. If you are interested, you might be able to see this axe haft in action splitting in the last part of the axe to grind video, near the very end when I split some fire wood.
Second, most of the axes I see pictures of with proud hafts are way too tall without beveled edges.