Earlier quoted context omitted.
Hahahaha I was picturing this idea before asking tbh... We sometimes get some customers who hate the QR's, or claim not having phone/signal/whatever. I'll lend them my phone to check...
I'd refuse to touch your phone and insult you for the offer. If you don't have a paper menu the question of me giving you money is already off the table; the food is forgotten and my new mission in your restaurant is to punish you with my vindictive attitude. If enough waitresses complain about obnoxious boomers giving them grief, I think the business owner will eventually wisen up.
You can be doing all this nonsense to an owner serving you.