It used to be useful, but at this point so many trans folks (including trans feminine people and trans women!) are marked as red these days. The red markers tend to skew toward trans masculine or intersex people, and often crypto-terfs will mark themselves as green. All this does is cause confusion.

Ultimately this needs better moderation, and, preferably, a way to mark individual authors, contributors, and individuals instead of entire news sources or websites. It's kind of jarring to see an article about trans resources marked as red solely because it's on a website that was deemed wholly transphobic, rather than the individual authors of the articles.