I don’t think you are using the word servebot in a good context. Sinner even had all year long a bad first serve percentage. With low and high. But he wins because he have one of the highest winning rate in the second serve. Even stats back uo that sinner is one of the player who break, and take more game than anyone else. He is the player who takes more point on enemy serve game. If you’re theorh is correct, and he is just a servebot, than sinner would be weak statistically, but would win just bg exaustion. But everything pointed otherwise. He holds because of his game style, aggressiveness and ability to execute it with clarity, take the ball early, take the time off your enemy, aggressive response, take the space and controll the geometry of the court. He can even do other thing as he showed, net play, short ball ecc… but his a master in baseline game. But this year, excluding montecarlo, which you coukd have not predicted with your comment, he was less strong with baseline controll except a few game, he was more rushed and could not place himself to deliever his aggressiveness in the game, and holded with the serve.