I've thought about the specific example of distorted menu photos before as well and to me it also signals intelligence level in the proprietor. I can't imagine myself in that position, looking at that and saying, "yup, that's good." And I also have a hard time imagining not understanding why it looks bad, what one could have done to not make it bad. It feels like a distinct decision to be lazy.

And like you said, if they are that careless and unadept at one thing, how are they going to work the intricacies of an espresso machine and food safety standards? Not that an espresso machine is that hard to operate, but surely it's more difficult than maintaining the aspect ratio of a photo. You don't even need to know the term "aspect ratio" to get it right.

But I also have to admit that my expectations seem to be very off on this specific issue. My wife is quite intelligent (actual, literal genius) and even quite artsy, and yet I had to teach her how to not resize photos incorrectly, both for aspect ratio and quality by resizing too large. It's seems like such an easy thing to see and figure out to me. This must be how my 10 year old sees my chess play.