If that is your takeaway from this story, hooooo boy you must be in a rage every day. Places all over Seattle default their machines to tip 18% when you buy a single roll of toilet paper and nothing else. (Edit: you could also pick up a few bottles of expensive wine they sell; maybe you’re in a rush and don’t expect a tip screen ; ooooops you tipped $40 for nothing!)
There’s a place that does this less than a block from me right now. Actually probably 2-3 places if you extend a block further.