Sure, some publications might like that. And some publications still treat data as a plural of datum rather than a mass noun like water. But I don't think I kno

Sure, some publications might like that. And some publications still treat data as a plural of datum rather than a mass noun like water. But I don't think I know a native speaker who would look at "naive" and feel the way they do when thy see "could of". FWIW, Economist explicitly names Naive as one to use without diacritic: https://cdn.static-economist.com/sites/default/files/store/Style_Guide_2015.pdf https://cdn.static-economist.com/sites/default/files/store/S...