Pearls before swine :-(
I have to admit, I am speechless. How can a customer even feel deceived by a window manufacturer who does not swim along in the mainstream of ergonomic thoughtlessness? Thinking along as a defect?! Are you serious?! How can anyone seriously complain "he should have at least informed us that he is not doing it just as wrong as the others"?
No, a defect – I say this also as a former window manufacturer and later window dealer – it clearly is not, but even the opposite. Unfortunately, many customers are so thoughtless or prefer the "because it's always been that way" or the "like everybody else has it," which is why the market is dominated by the two variants "middle" and "I don't care" forming an oligopoly. If I were to run this window manufacturer, I would develop thinking along as a trademark and not offer any "classic" variant at all. By the way: the Swedes find it just as quirky that we open our windows inward as we find it that the English drive on the left side. A defect – relatively yes, drive on the right in England once, then it crashes!