This is not accurate at all. Players want all the information they can get for every shot. They can watch their partner hit the shot and tell whether he took a little off or hit it full or whatever. If they then know what club they hit that will give them more information about how long the shot is playing. And these guys are so precise, just adjusting how the shot is playing by a couple of yards makes a difference to them. Telling them what club you just hit is basically like saying "there is more wind up there than you think" which is giving advice, which is cheating.This is so out-of-touch I don't even know where to begin. The players absolutely KNOW what the other guy is hitting. But, why would they care? These guys know what they hit 180 yards. They also know against the wind and with the wind behind them. They hit THOUSANDS of balls. They don't need to be told what to hit. Just so ridiculous and outdated.
This isn't some weekend municipal golf tournament. These guys know their games and play for millions. What some other player hits has almost ZERO influence on their mindset or game.