Haven’t bought a faucet for a couple years, so my comment may be off base. Try replacing the aerator. That’s how flow used to be controlled. Don’t know about newer faucets. They may control flow with some mechanism inside faucet.
I’ve seen that (and a slightly clogged aerator can definitely whack the flow!), but in this case, from my original post: “Taking the aerator off doesn’t change the flow rate much.”
So, I suspect EPA made the mfgrs. limit flow elsewhere, as removing an aerator is very easy.