You could say that, but there is zero evidence to back that up. The few shooters that had difficulty qualifying with the 1076 were issued the 1086, with a slightly shorter trigger reach, and qualified just fine.I would say the primary reason 10 MM was dropped in favor of the 40 S&W was to reduce the circumference of the grip so people (men or women) with smaller hands could more easily grip the gun, power was the same as was round capacity.
The 40 is a compromise between the 9 MM's capacity and the big bore of a 45. The 40 had a advantage over the 45 in the higher pressure offered a little flatter shooting.
A bigger entrance hole will rarely get smaller, modern bullets do expand, but they expand in proportion to caliber and speed. I think that 9 and 40 have the extra speed over the 45 to ensure better expansion. Personally I will shoot +P, but not +P+ in a 9, so that makes my 9 carry round (Underwood 125 Gold Dot +P) slower than my carry 40 round (Underwood 155 XTP)
I carry most calibers now and then, but out and about it is 40 that usually gets the nod
The “small hands” theory is an internet myth that refuses to die.