Did you read any of what I wrote? I didn't say that human interactions can't be transactional, I quite clearly—at least I think—said that LLMs are not even transactional.

EDIT:

To clarify I and maybe put it in terms which are closer to your interpretation.

With humans: Indeed you should not have unrealistic expectations of workers in the service industry, but you should still treat them with human decency and respect. They are not their to fit your needs, they have their own self which matters. They are more than meets the eye.

With AI: While you should also not have unrealistic expectations of chatbots (which i would recommend avoiding using altogether really), it's where humans are more than meets the eye, chatbots are less. Inasmuch as you still choose to use them, by all means remain polite—for your own sake, rather than for the bot—There's nothing below the surface,

I don't personally believe that taking an overly transactional view of human interactions to be desirable or healthy, I think it's more useful to frame it as respecting other people's boundaries and recognizing when you might be a nuisance. (Or when to be a nuisance when there is enough at stake). Indeed, i think—not that this appears to the case for you—that being overly transactional could lead you to believe that affection can be bought, or that you can be owed affection.

And I especially don't think it healthy to essentially be saying: "have the same expectations of chatbots and service workers".

TLDR:

You should avoid catching feelings for service workers because they have their own world and wants, and it is being a nuisance to bring unsolicited advances, it's not just about protecting yourself, it's also about protecting them.

You should never catch feelings for a chatbot, because they don't have their own world or wants, it is cutting yourself from humanity to project feelings onto it, it is mostly about protecting yourself, although I would also argue society (by staying healthy).