Being snide ^^^ isn’t an argument, but sure, I’ll bite.
With both sizes, the same (tiny) amount of each card is manipulated to interleave the deck. Most of the deck is stationary until pushed together, which requires no significant finger strength.
Unless the dealer is a toddler, the difference should be trivial… If an added 1/4” of cellulose makes someone’s hands tired, their muscles or technique are the problem, not the cards.
Meanwhile a competent dealer can pitch either size well. There is no significant difference, aerodynamically, in how they pitch, though I can believe some people convincee themselves otherwise to justify taste, rather than science. Anyone complaining about the marginal size difference is mainly telling on their own limitations.
Card flips and other errors are usually due to sloppy technique and/or flaws in the cards such as cupping.
Sorry/not sorry if sticking to facts and reality rubs anyone the wrong way.