I’ve seen auto-calculated tip of all combinations of with/without tax, with/without percent discount, and with/without individual item discounts.

I wish tipping would end, by mandating a living wage for all workers from the chef to the diskwasher and including all the waitstaff and everyone else in both the front and the back. But, until it does, I try to be generous with my tips, but also kind to people that can’t or are simply tired of “tipflation”.