Seems like any activist org should have two audiences: 1) Supporters who may become donors 2) Neutrals/opponents who may become supporters. If you only ever communicate in forums where people already agree with you, you’ll probably have optimized your fundraising, but will probably never achieve your actual purpose. Activist orgs have to reach and turn the non-supporters somehow, and the absolute best way to achieve…
It's like saying organizations should have a branded presence on 4chan otherwise they might not reach the very online and meme-poisoned demographics.