Sinner has made remarkable progress, in leaps and bounds, over the last year. Taking Novak down in the biggest of stages - Davis cup and ao. But his down 0-2 sets comeback win in his first slam final, that too against med "the tactician" is the most incredible yet. Contrast his calm with thiem and zverev in the 2020 uso final.
Maybe someone will arrive at an effective strategy to counter him. But at the moment with where his game's at, and cahill in the camp, you can't put a ceiling on sinner.