A couple of things on this.
1. He indicates he never used it on tour.
2. He has it on the crosses and you can see it is frayed already. Most pros play with a racquet for 7 games and swap out before the bed locks up. Most rec players can't afford that. .
3. He indicates he finds gut mains/poly cross too powerful so perhaps it is. To each their own. He indicates he played on tour. How many of us have played on tour or have that power of a game to find it too powerful?
4. One can achieve that power with a soft cross if they don't care about it locking up due to fraying with a cheaper multi and get the "effortless power" as he indicates.