Passing food by placing it directly on someone else's plate or bowl is fine. The taboo is specifically about two people holding onto the same thing at the same tine with chopsticks, the way cremated bone fragments are placed into the urn at kotsuage.

Other than that, I agree. It's kind of like trying to apply Emily Post's etiquette to TV dinners: many of these "rules" would be viewed as prissy by Japanese and some (eg. giving your miso soup a swirl with your chopsticks before drinking) are very, very commonly ignored.