Then I think you must admit that your country is an outlier. Even in the context of a casualizing world. If that is the case then I think it's misleading to say that my fit is at all formal. You'd only be able to say that Norwegians have a highly casualized idea of formality which you could then say informs your response. However you can't make the claim that my fit is objectively too formal for an OCBD shirt.
Don't think so. Malaysia, Singapore, Taiwan, Hong Kong, Indonesia, Phillipines, India, China are just a few countries that comes to mind.In many of these places, long-sleeve shirts and slacks without tie is already over the border of formality.