I made a personal decision years ago based on treatment I received at places that required reservations that if they required reservations, they weren’t going to get my business.
I can get treated badly for free with no reservation hassle anywhere; on the flipside, I can also appropriately tip excessively wherever I receive service that exceeds what I’m used to anywhere I eat. They’re free to their business decision, and so am I. Both parties get exactly what they hoped for. Ain’t capitalism grand?