I saw that, and it doesn’t do anything for me personally than paint the authors as petulant. Clearly “some danish folk” are the obvious other here and they themselves can’t be bothered because they don’t read the character. If they want to refer to the mathematical character as mentioned in other comments, why not use that instead of one from an actual alphabet? They’re free to do whatever they want but anyone familiar with the character is also free to see them as being not a little US-centric.