It isn't a luddite backlash. It's just that in many cases the value-add for customers doesn't justify the price difference.

There are certain benefits to apps that exist, don't get me wrong. Discoverability, flexible pricing, direct-to-consumer-marketing, etc. But most of those don't apply to me at the consumer level. Do I want to pay 20% more for the convenience of browsing menus? Not really. I'm on the app to buy food and get it delivered. Insofar as some places now offer delivery where before they didn't, I benefit. Insofar as the same places I used to frequent now apply a markup to cover the cut the app gets, I lose out.

The UX improvement of being able to press 'reorder' has never eclipsed calling into my favourite local spot, asking for the regular, wishing the owner well, then discovering he put extra dumplings in the bag for me.