Prompting for a tip with online take out ordering

A new Red Robin opened in my town. It’s a tiny one, shoehorned into about 30% of a former Ruby Tuesday space and there’s always a wait for a table, so I ordered take out online for pick up. It prompted me for a tip amount with a choice of several percentages. Now I don’t feel at all compelled to tip in this situation. How would I even know who gets it? Or who deserves it? I don’t think anybody does. Then I got to worrying about somebody seeing a declined tip on the order and getting a “special sauce” burger. And I had the same reservations with the 10% option. So, yes, I selected a 20% tip for me to drive myself to the restaurant and pick up a burger and fries at the desk. Bottom line, I will not order from them online again for this reason.