I think the point there was that replacing harmful words with **** in a harmful message doesn't make the message not harmful.

If you took a racist/sexist/transphobic/homophobic/whatever diatribe from a particularly virulent hater of whatever group it is they are hating and replaced each instance of whichever specific derogatory term, meaning N word and the like, but the message remained it would still essentially be the same message with the same impact.

Reading Mein Kampf with every use of an anti-Semitic slur replaced with a series of four asterisks would still be reading the same hateful tripe.  Listening to a "sermon" from the West Borough Baptist Church wherein every usage of a homophobic slur was replaced with "Homosexual Individual" would still result in the same hateful message just ever so slightly less incendiary.