You can actually get into some really nasty side forces in battoning for purposes of wood splitting. If the knife doesn't have the flexibility to take it you can snap it right away. (check out the old camp knife challenge thread for some scary flex pictures.).
Now, same would apply to chopping, but- in generally a chopping knife is going to be significantly larger than the minimum batoning knife. People are out batonning with 4 and 5 inch blades.
Battonning as a whole idea seems oddly controversial, and I don't really see why. It's not whaling n things in excess- though some people seems to operate on "excess or nothing!"- it's tapping, with as much force as needed to do the job, not more. Anyone who has used chisels for carving can understand this.
Yeah, you've got to use some common sense. You can get into a knot, bugger up the edge, torque the blade. You can screw up a lot of your gear using it the wrong way, but I don't see batoning itself as a "wrong" way to use a knife.
I (gently)batoned a 3/32" AG Russell Deerhunter in AUS-8A through oak limbs almost as long as the blade just to see what would happen after reading one of Cliff's atrocities about batoning the same knife in all three available steels through
nails. What happened was some wood got split. Tap, tap, tap.
I batoned my BK7 through the same log one of my buddies broke the bit of my GB Wildlife Hatchet off from beard to heel on, and used it in the same way as the sole tool for collecting large limbs from downed trees for 3 days, since I no longer had a hatchet.
My Busse Basic 9 was used to section a log a good 2 1/2ft. in diameter to burn in a barrel on a strike line with a 3lb. hammer for a baton. Was just screwing around, but we did want the wood. Knocked a chunk out of the edge of the spine with an off-center hit, but 8 years later, the knife is still functionally 100%.
Beating, however gently, the tip of a Deerhunter, and pounding even an overbuilt Busse's tip with an Engineer's hammer...sure those were probably examples of abuse, but I'm not advocating going to extremes in the woods, just relating that the knives could and did take things well beyond what some would expect.
Like most tools, I think a knife is more about the user, and that what you have isn't indicative of what you can do.