Understanding the Ruling on being in an isolated place for opposite gender

I came across this fatwa and I can understand to the point that it is forbidden to be in 'an isolated Place' in which a man and a woman will be together based on the hadiths in the fatwa . But in what contexts were these hadiths told by the prophet (pbuh) ? Can you state some situations where else the word 'khalwah' has been used ? (During the time of prophet) What are other fatwas or interpretations of these hadiths ?(Sunni opinions) If I take this fatwa too seriously, I cannot enter even shops where there is only a female sitting, same would apply for my sister/mother/wife who would want to shop. Neither can I enter in a taxi which would be driven by a female. Also, if I am walking on an isolated street and a woman is Approaching, I must suddenly run away to the closest shop that has at least a male. The practicality of such fatwas is really questionable. My purpose of asking this question is to simply categorize the places I visit. For me the definition of isolated place is where you intentionally go with the expectation that no one else can know your presence with the woman.(examples: an isolated field visit purposely, locked room etc) The places that do not fall in this category of isolated places: shops, taxis, streets, common rooms in offices/schools where anyone can enter exit/enter anytime etc.