Do not want to give his name out, but one of my clients is a former PGA tour player. Easily the best player I have ever played with. He was what you would call a journeyman on tour, but did win several millions of dollars and is not hurting these days. The putter gave him issues or he would have done much better on tour because ball striking is definitely not an issue.
Its interesting to watch someone at that level play the game. Club selection, course management, shot making abilities, etc. Its really cool to watch. Makes me realize how much I do not know about the game, but I try and learn as much as I can when I have the chance to play with him.
What's amazing is that this philosophy hasn't changed in more than 100 years.
There are so many quick fix posts in every golf blog, it's amazing that the golf swing can seem so simple and yet is really difficult to do. Most people think how hard can it be to put a ball into a hole? The answer is "it's definitely not easy"