You don't have professional golfers all playing 72 holes of mini-putt and winning tournaments at random and go "our problem here is that we need to make them play more holes!".
The playing surface needs to be tougher because rest assured we are not going to see races to 21 or longer in tournament play and a guy like Raj Hundal with his break is still a threat on a 4.5 inch pocket diamond even in a longer race while he was completely exposed on the 4 1/8th inch diamond of TAR.
Throw Raj onto a 4 1/8th inch cut diamond against SVB, Alex, Dennis and the rest of the top players in the world and see if he ever wins another major event.
Don't forget raj and oscar played on the same table of SVB and alex but they played on a worn table. The table was playing drastically harder than the one used on the alex vs svb... I agree with you with the comment that oscar and raj are not at the same level of svb, alex, mika, ecc. Some mistake by raj were shocking.