> But the author just took pictures of food & expected a realistic response?

There are dozens of ios/android apps with 100-300k+ ratings and god knows how many millions of installs which do exactly this

"Cal AI - Food Calorie Tracker: Just snap a photo and our smart AI calorie tracker analyzes your meal instantly."

308k ratings on ios, 264k ratings on androids easily 5-10m installs across both platforms.