I'm glad that most of the communities I'm part of sat out of this mess.

The top subs I read and/or post to are /r/asktransgender, /r/ainbow, /r/comicbooks, and /r/kamenrider. None of them would've benefited from taking part in any kind of blackout (the first two of those function as support groups and any blackout could seriously hurt someone who needs help, the third is a mid-sized fandom where people care more about talking about their hobby than staging a juvenile protest, and the fourth is an extremely niche fandom so small that nobody would notice a blackout).