Darryl's work is amazing. Today we see people doing the polar opposite, label someone, shum and deplatform, label some more, harass, destroy his/her livelihood, destroy his/her reputation.
Risking Godwin's law, imagine the extreme case of Hitler. The best strategy to convert Hitler may well be Jewish people befriending him, rather than confronting him. But in the meantime, Hitler is radicalizing others and committing genocide. At some point, it makes more sense to just assassinate Hitler (or deplatform him, or depose him, etc.) rather than trying to save him.
Killing someone for their ideas sends the wrong message and grants them more legitimacy than anything. You elevate them to the same status as Jesus Christ, whose popular namesake religion is predicated on sticking to your beliefs in the face of any and all consequence.