They have their place, and are good in certain circumstances. A bungee cord round a big log disc means you can split and rotate, lots quicker than picking up and reloading.
Also, if I spend a couple of hours with the mail, my tennis elbow gives me bother for ages after.
I currently have a load of cherry, been needing sit since last winter, neither the splitter or the mail will look at it, needs the big sledge and brass grenade to get it split.