Because they see reality like fucking Marvel movies. I’d love to believe that it’s propaganda but honestly it’s just because their privilege allows them to be insulated from real world shit.

Btw. Mordor was not less real than Gondor and Rohan, there are snippets of lore here and there about it having a functioning economy, society and international relations, just in the book we mostly see the volcanic wilderness and hot war-condition military infrastructure in its west part.