I’ve watched people, some that are really great players do unusual things to their shafts, sand paper, scotchbrite pads, magic erasers.
For me, I’m not a fan of ANYTHING remotely abrasive near my shafts ever. Before play I burnish with a piece of leather, and wipe down after play with a microfiber cloth. Twice a year, my cue guy will use block carnuba wax and then burnish the hell out of it with a piece of leather on the lathe to seal it in early spring and early fall. I’ve got a lot of shafts, they’re all 30 to 40+ years old, dead straight and feel and play just fine. Everyone has their something
