In my many years I've seen 2 albino white tail bucks... Both in the Black Hills of South Dakota in about the same 5 mile area... These sightings about 5 years apart.. Yes. They were both true albino.. Pink inside the ear, pink nose, pink around the hooves, and red reflection in the eyes..
Of all the game in the many places that I have been this is my only 2 personal incidents..
From Wildlife Biology 101, I don't remember a lot but believe there are a number of issues with hereditary, dominant, recessive genes, and location restrictions of herds that make a big contribution to this issue or its recurrence...
My 5 cents of experience and knowledge..