Two inches isn't going to make any difference. These kinds of rules say that shotgunners are way less competent with their 3 foot long guns than handgunnners are with their 7 inch long guns?

The irony being that lots of shotgunners happily throw the handgun guys under then control bus.
Nah, the reason is that petty tyrants feel compelled to make burocratic rules for other people so they can feel superior.
This comment screams that you have precious little experience with handguns.

As a male, I've had hot brass go down my tee-shirt and even had a hot 22 rimfire case go down my glasses. Both being quite unpleasant experiences. The funky chicken is understandable in those times but one still has to maintain control over the muzzle direction. Lets not slut shame the women who choose to shoot shall we?