As a business owner that has used several different POS systems, I can tell you that they are choosing to have you see the tip prompt. I have never seen a system that didn't have tipping as an option that can be turned on or off. However, it is usually set to on as default.
Is this an error of some kind, or is this post actually that old? I'm using Liftoff so I'm not sure how to check for an actual post date.
I can't tell if this is a serious question or not, but it's pretty complicated to fully explain. The short of the long of it is that now that MySpace has started to use retina verification for their 2FA, people are upset that it's an invasion of privacy due to the reflective nature of human ball eyes. Since Lemmy only requires a password for mod accounts, it's an easier platform for people to use to share embedded auto play music and glittery gifs. I don't think it'll last though, word on the street is that Digg is going to be removing all authentication methods soon, so I expect a majority of the userbase will move there