You're using Tiger as an example? Never has a golfer been more detached, had a straighter game face, than Tiger. His lack of involvement with crowds, his inability to smile, was one of the reasons I was never able to warm to him.Someone should tell these PGA Tour pro,s that it’s ok to smile once in a while. Other than a hole in one or holing out from over 100 yards they rarely smile or laugh. At least Tiger would show some emotion which is one reason non golfers found interest in our sport.
It seems to be “game face“ or look of disappointment most of the time.
Best golfer for smiles now is Viktor Hovland. He looks genuinely happy to be out there, happy to laugh and have fun. He's great to watch.