It's flagged because lots of "trusted" users flagged it.
Why did they do that? Some might have an aversion to politics in general. That has long been a strong strain here, with people seeing it as diluting the tech focus.
But for a lot, it's clearly more sinister. There has been a lot of partiality in tech recently to plainly fascist and other ultra-right-wing ideas, especially among the executives and capital. They like it, and want it to win, everywhere, and will reflexively do what they can to help it, including burying bad coverage.