Is it, therefore, somehow a misplaced appreciation of Bitcoin when many are ecstatic every time it is accepted as a payment for a glass of lemonade or a piece of banana?
Not really. People get ecstatic not necessarily because bitcoin is being used for one of the things it's intendedly made for(payments), but mostly because bitcoin is actually getting used in the first place. We all know that Bitcoin is already a household name, yet adoption is still very low.
Again, my point is that Bitcoin wasn't intended for those kinds of transactions. Yes, Bitcoin is intended as a payment method, but online. So if you're dealing with somebody face to face, Bitcoin isn't for it. Cash is the real peer to peer. There are no third parties in between. It's a great system that Satoshi wanted to imitate it in the online world where P2P transactions aren't at all possible.
So to a certain extent, buying a piece of cupcake from a nearby bakeshop using Bitcoin isn't really
adoption.