IMO, (and we all have one) some rules are super nitty, some are not.
In MR events, they make it clear to the players and the fans that ball cleaning, getting a mechanical bridge, getting a jump stick, etc, does not stop the clock. I think that's fair, not nitty. The players could call for the ball to be cleaned when they need 15 more seconds to decide the shot.
Helping the ref get the balls after the 9/10 is pocketed and having a foul called is the nittiest rule in existence. I don't think that's even a WPA rule, but I could be wrong on that. Half of me says players should just go to their chair and let the ref do it himself. The other half of me says that will slow down further this already slow poke game, and the fans will be the ones who suffer, not the ref.
That one is even nittier than the Pacquiao 10 ball event from 15 years ago that Efren won where obvious 10's had to be called.
Striking the CB with the front of the tip in a forward motion being a foul is absolutely not nitty IMO. The front of the tip is sacrilege! That's how you take a shot! I mean that is first grade stuff. The other stuff changes from event to event, and from year to year, and from promoter to promoter. This one has been around forever.
These are my opinions