If anything, I've found the exact opposite.
I've tried to buy a S&W M&P 1905 .38 that was 102 years old at the time as a C&R purchase.
The dealer would NOT sell it to me aas a C&R gun. It wasn't explicitly on the list.
I bought the gun the same way I would a modern, wonder 9 semi-auto, pistol permit, paperwork, NICS check... the whole ball of wax.
That has been my experience several times.
It's amazing that so many people don't realize that anything over 50 years old qualifies, especially dealers.....who should.