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.
But in my opinion, actually we also can't deny that actually accepting bitcoin as an alternative means of payment is a joy, indeed so far bitcoin has been out of the main reason when Satoshi first created bitcoin, now bitcoin is more identical as an investment compared to the main reason namely: To decentralize the payment system that is free from central control or third party intermediaries including banks and the government, at this time maybe without us knowing it in the modern era using bitcoin as an alternative payment is much better and more efficient but the regulations created by the government force us to further optimize bitcoin as an investment asset.