You're right, but at 45 yards, in most/many situations If the birds are not strutting, you cannot tell the difference between male or female, jake or tom, etc. Any how I bet you most hunters cannot tell the difference at that distance. Your average hunter is marketed all these hotrod guns, chokes and ammo and at 45 yards and beyond, I bet you if he shoots a bird; he will be keeping his fingers crossed that it actually has a beard because you usually cannot tell from that far away. I'm not saying that 45 yard shots are unethical, I'm just saying they are best left to experienced hunters who can tell jakes, toms and hens apart from their body language and behaviors alone.
And what do you do if the tom pops out at 25-35 yards away? You will seriously pepper him with shot I imagine.
Another consideration is that the patterns I posted compare typical number 6 shot. If you want to stretch the pattern on the right to 45 yards you might want to switch to 4-5 shot to keep energy numbers up, in which case that pattern seriously starts to open up and sort of voids the whole idea of long range shooting.