Me neither, at least not on PC.
Pooping rockets from a thousand miles away at an active fight is basically never ideal Pharah play and besides, I'm not sure it even makes sense for McCree to be able to kill her at that range.
Honestly I'm struggling to envision what situation you're imagining here where:
a - McCree is doing his minimum damage
b - Pharah is participating in a fight from a range at which McCree can only reasonably do minimum damage but where Pharah's participation is not just spamming
c - McCree doing minimum damage cannot be attributed to poor/unprepared positioning
Like yeah if McCree is coming out of spawn on Anubis attack and he's getting hit by a Pharah on the ledge, he really should do minimum damage. Similarly, if Pharah dives the back lines and McCree tries to cap her from Narnia then his poor positioning deserves to be punished.
If anything, high skill hitscans are too viable against Pharah when there's no Mercy in play, and her dependence on Mercy defines their awkward place in the meta.