In general, I am not in favor of Chofetz Chaim-based lashon hara guidelines (as her propounds in this essay), for several reasons. People over-apply them. They are formulated in a way biased to prevent possible slander, more than concerned for protecting potential victims. They took what had, until this point, been a mostly hashkafic and good-middot matter, and transformed them into halacha. And while some contemporaries disagreed with him, for lashon hara, unlike the rest of his halachic work, we don’t have an Aruch HaShulchan disputant to give contrast to his Mishna Berurah.
The Pischei Teshuva (O.C. 156) notes that while Mussar books are strongly focused on the prohibition of speaking Lashon Harah, there is a worse sin – not speaking up to prevent harm to others!
I think the entire post shows the problem with trying to work out “Judaism” using feelings and Mussar instead of Halacha. This is a far wider topic. Anyway, see the rest of the article.