The page is implicitly weird, too; r/books, for instance, is public but actively participating in the protest by refusing to post for 48 hours. The protest isn't a public/private binary.

EDIT: Is this even a list of subreddits that "pledged to go private"? Looking at r/askscience, they never pledged to go private, just to go read-only, like r/books. So why are they and r/books even on this list?

Yeah but if they include the biggest subreddits it will be affecting most of their users. The long tail of small subreddits doesn't really matter if the big ones are down.

Ok, we've put that in the title above. Thanks!

Thank you, I wasn't sure if I should edit this for clarity when I posted.

More interesting would be the number of registered users who have at least 10 of these 7,245 subreddits in their front page feed.

I’d wager that with these 7,245 subreddits “dark”, over 99% of Reddit users are at least somewhat impacted (fairly confident in that) but also that a large minority now face a hardly recognizable front page (hard to put a number on that).