This seems completely unnecessary and performative. I have a hard time understanding how reducing their reach could possibly be helpful to the goals of the organization. I'm definitely going to keep donating to them, but I'm concerned.
I'm on Twitter/X, but none of the other social media sites they list (I mean, I'm on LinkedIn, but not in any sort of regular way). So their reach to me personally is diminished. Obviously I'll still go on their website if I want to keep up with their activities and I'll probably still hear relevant news about them though.