There’s certainly something to that. Before the pandemic, I would have never thought to order a burger for delivery because that’s just not what one does. If I wanted delivery, I’d go for pizza or Thai food.

But during the pandemic I wanted a burger, and getting my car out sucked (yay city living), so I ordered a delivery burger. Immediately after that subpar experience I thought “oh, that’s why ordering delivery burgers isn’t the norm” and went back to ordering noodles and pizza instead.

It’s the leap from “culturally this isn’t a common thing to do (order a delivery burger), so obviously it’s the restaurants fault that my experience wasn’t as good as it would be in store” that I don’t get.

I don't think there's any indication that this issue is new to the pandemic, is there?

I also don't have any strong opinions about this particular topic, and there could very well be some other explanation. I'm just generally remarking on the common expression of such confusion at other people acting suboptimally; sometimes it's just because most people aren't all that smart or thoughtful.