Reminds me of those messenger restaurants in Sweden. You have to have messenger installed and then you roder, the server comes out with the food and that's the only connection you will have with them. Swedish servers and bartenders and taxi drivers want tips. And they get super pissed if you don't tip them. The espresso house barista never asks for tips, the bartender does and gets mad if you don't tip.

All they have done is bring me a plate of food , zero interaction. Why why why should I tip them? Still pisses me off. I actively avoid restaurants that use this system. Takeouts however I am fine with in this way.

Also , do not tip in Sweden, ever.