You are SOOOO right.
I generally avoid violent acts, but squirrels inspire me to fantasies of incredibly violent acts....
I lost two complete sunflower heads (out of only 10 plants) to squirrel damage last year. I also lost untold numbers of seedlings to squirrels digging them up to bury peanut shells (!).
The peanut shells also mean that at least one of my benighted neighbors is feeding the d*mned squirrels.
My neighbors are much too close by (our lot is only 50' x 100') for any realistic use of a slingshot or--ahem--other hand-eye coordination equipment
to be of use, and I won't use poisons on principle: too many unintended secondary victims.
But I do wish a raccoon would take 'em out...Not that I like raccoons, either, having fought them off in Berkeley with many strong blasts of water from the hose. But raccoons could really do me a favor by battling with the squirrels. A strong and adventurous neighborhood cat wouldn't go amiss, either...
Sunset Zone 17, USDA Zone 9