He is not “Playing Tool’s Schism”, he is “Playing WITH Tool’s Schism”.
Don’t get me wrong, this is still an incredible feat to be able to adapt to a song that changes meter often after only hearing it once, but he’s not playing the original drum line or anywhere close.
If I sang different words and a different melody over Justin Bieber’s Baby, you wouldn’t say I’m “Singing Justin Bieber’s Baby”.