I'm not sure I agree but THEY are the one that determines if they will receive and give it to you.
I have 3-4 FFL's I've used over the years, I didn't think any of them were stupid.
One did call the ATF but I TOLD they guy do NOT send to a FFL, it was antiques and the ATF as default when unknown keeps them. Made in ~1865 but no way to prove it.