A. Yes, and this is only a problem for open platforms

B. Even if there was not an economic incentive to be there, it may still be worth it to meet people where they are

I deleted my Twitter account a whole ago, and maybe there's a lot fewer people with freedom tech now as a result, but it was more important to me to stop letting someone else directly profit off of me than it was for me to spread the good word.

If I were actually trying to build a movement, I'd have brand accounts absolutely everywhere. Facebook, TikTok, Threads, YouTube... you name it. Without going to these places, you're largely preaching to the choir. Not very effective at spreading your message.