Well, @Wanderer may post his formulas (and other code) with the correct quotes using the tool for
Preformatted Text or otherwise. But he (f/m) still will get errors if he pastes formulas posted by others without using the appropriate tool.
Shouldn’t the admins switch off “typographic quotes” for such a technical site completely?
I would vote
This is an international site in English language. Neither English, nor American nor ‘Somewhereelses’ specifics concerning the quotation marks nor the stubborn (and silly) date-time formats still used here or there (and this differntly in English speaking countries) are suitable for it. Concerning the date-time the bad current state is very counterproductive. Many users wasted and waste again their time to help users out of their calamities caused by lacking understanding for
date-time values and their formatting in spreadsheets. Let’s stick to international standards wherever possible.
(I even am afraid that bad practice here and there may make uneducated people believe, the -very bad- US habits are something like a global standard.)
BTW: I would like to once again draw attention to the issue addressed here: Why do I often get an error (508, 504, 502 e.g.) if I paste a Calc formula from some post into my sheet?.