>First, if you're actually holding a waiter's tip hostage over the ability to split checks, you're a shitty person.

A tip is fully extra incentive. The waiter is not my employee, and the social expectation of a tip is a horrible practice (imagine if we replaced the expectation with someone that wasn't financial in nature).

>And the kind of person that threatens to leave a bad tip if the waiter doesn't do something is the kind of person that probably tips badly to begin with.

This sounds kinda close to a personal attack. Not to mention there is a vast difference between threatening to not leave a tip ("if you don't split this check then I won't tip you") and what the parent post did (bringing up how refusing customer service right before a tip is given is likely to hurt the tip, never mentioning if this was a conscious or subconscious behavior change made by the tipper).