Is the moralizing you're referencing coming from the article or comments?

I can't see anything in either implying people are bad for seeing world maps as "upside down" when the Southern Hemisphere is at the top. The article does say that looking at it that way "encourages us to think more deeply about such conventions" - I don't think it's saying people are morally bad/prejudiced/etc (or anything) for accepting those conventions.

I don't want to acuse but it seems to me like you're assuming a response from an imagined liberal-woke-type-persona(tm) that doesn't exist?