You should vocalize it to the owner (or at least management) if you can. You'd be surprised what comes of it.
I did this once with a restaurant/bar owner, and she was very understanding. Once I took the time to explain how I didn't wanna be subjected to everything that a setup like that brings, she empathized and actually got a standalone website.
Many people aren't aware until you make em aware. And whether they feel the same or not from a consumer standpoint, at least they'll know that there's people out there who do care, and it affects business. And usually, if it affects business, it doesn't matter what their personal feelings towards it are. A good business owner will be sure to adjust because they learned something new about the market.
even worse is any deals are on downloaded apps. F that. The only good effect for me with that is its an effective way to identify and avoid corporate type institutions as they are top in using it.
Call them on the telephone, and tell a human you would like to make a reservation. Telephone voice calls still work at every restaurant in my region. Also, get this, you can place take out orders that way at most places! It's an amazing technology!