However, from that experience I saw that with the existence of a small shop that accepts Bitcoin like this, it gives hope that there are still people who are aware of using Bitcoin not only as an investment, but also like a currency in general which can be used by people to make transactions. Even in the midst of limitations such as rural areas where internet access is sometimes disrupted and government regulations that prohibit shops from accepting Bitcoin, but that is not an obstacle for him to empower Bitcoin as a payment.
Although Bitcoin is commonly adopted in modern cities, people in rural areas are still not very aware of it.
Your experience just reminds me of a remote area in Brazil where Bitcoin is playing a particularly important role in the economy, where over 200 shops welcomed Bitcoin as a payment system. Maybe it was the first vast acceptance of Bitcoin by the local shop

I could be different but I don't want anyone knows that I have bitcoin and cryptocurrency. The practice of entering such places, and proactively asking for such information or paying some stuffs with bitcoin or altcoin potentially bring more curious eyes on me and puts me at higher risk. I don't want to put myself at risk by my own practice so practically I avoid to pay things directly with bitcoin.
You never know what will happen next after you exit a store or a local area and you never can exclude that some bad guys are waiting for you around such stores. So let be as most cautious and carefully as possible, you don't lose anything by doing this, while you can get many benefit in return. So why take risk?
I agree that such stores contribute to Bitcoin adoption and they need to have customers actually use bitcoins for payments too, but if it is about me, I avoid this practice.
Yes privacy and security are very important issues in Bitcoin transactions.
You know, Bitcoin transactions are pseudonymous.
So if you use a custodial service and verify KYC, then tracing you by digging public ledger records is very much possible.
So it is really a matter of concern who values their privacy and anonymity more.
Also, something like
wrench attacks could have occurred in this case.
But keep in mind same thing could happen with a cash holder, not only a Bitcoin Holder, right?

if you had a headache, you can't cut your head, so special precautions could be taken here