Trevino hit a big out to in fade all his days, he won each of the majors twice except for the mastes which eluded him, Augusta being known as a place where many shot types and shapes are needed. Not detracting from him but he only really hit the fade and nothing else.
So ..?
He built a swing that was thoroughly repeatable under the hugest pressure - earning money to feed himself. He was a self taught hustler. His background would have barred him from ever joining any club that gave the likes of Nicklaus and Woods the start they had.
Yes, he would have liked to have won the Masters. But he still won 6 majors, and had another top 10 finishes in the majors alone. Most golfers are swing fiddlers who change a successful swing looking for the next improvement.
Trevino just went out there and earned more money.