Utter nonsense.
"Back in the day" given UNKewlJ claimed age, still the boards would not be unsealed wood requiring any oil at all.
Surfboards in the 1950s & 1960s
In the late 1940s and early 1950s, industrial and manufacturing technology developments made during World War II carried over to surfboard design. The most important and lasting development in design occurred when wood was phased out in favor of polyurethane foam and fiberglass in the late 1950s.
He just Studied Up ineffectually is all. Nothing new, he blows it all the time - because he has not actually done any of what he claims. Other than male prostitution, now on that sujet he could enlighten us and not trip all over himself.