From the assemblies of anecdotes I have read, the crosscut came into to more widespread use right around 1900. This should correspond with the degradation of the closest thing to "perfection" axes have ever come to. In my opinion, it does.
Racers will pick the most efficient design for chopping with a rare piece of perfect softwood as fast as possible, with a long break in between work. I don't mean to chastise competitive choppers, and I think there is a lot to learn from them. That does not change the fact that competitive chopping places value in different balances of mechanical functions than normal use. Peter wrote this as response to one of my probably over zealous pries to try and get a good discussion going, speaking of Tom Clark: "Given his evident passion for the craft, and practically the whole range of wood splitting tools presumably at his disposal, why did he settle on a 4 1/4 lb. ax instead of a maul??" ....For what its worth, Tom also used a straight handle with a generous swell that still put the line of grip just forward of the eye from what I can tell.
The swell is not what Cook, Vido, myself and a plethora of old time handle carvers are saying or implying is bad. you can have a large comfortable swell without throwing the line of the grip end way off. Peter even stated while debating Ross/Woodtrekker that European axes with straight handles and no swells were inferior to what he considered the gold standard over here (paraphrasing there). A comfortable swell and grip is very important and not at all what I am steadfastly against here-- I have made straight handles with little swell and found them very unergonomic to use. I still maintain that an excessive (<--- important point) curve that throws the line of the grip (or rotational axis, a term this self described intentional ignoramus does not particularly like) off behind the poll at an angle makes an axe clumsy, less accurate, and feels like it wants to chop into the ground/my foot.
Having spent hundreds of hours carving and contemplating handles, most of which were promptly left in the corner/sawn off, I have my preferences. I encourage others to try to nurse the same positive, instead of negative, outlook on deciding preference. If you have tried a straight handle and didn't like it, try carving your own with a different well, offset, or even knob end curve (gasp). No amount of science or physics (all of which are of the theoretical variety to me) will ever explain the how and why of what just "feels" right (convincingly, to me anyway).
Sorry if my posts come across as pointed. that wasnt the intent.