It’s not even June 12 for me, yet I suspect many subreddits went dark based on UTC.
I moved to Reddit during the Digg migration. Thus, I got the default subscriptions from back in the day. Over the years, I’ve unsubscribed to things I felt were crap, and I’ve added a number of subreddits.
Already, many have gone dark. My old.Reddit.com homepage already looks much different than normal, and I know that a few subreddits that do show have announced they’ll go dark. I assume they are US based and timing that locally.
I’ve spent more time in the Lemmy fediverse than on Reddit since joining, but I’ve spent time on both.
I’ll admit to cynical skepticism of the impact of the darkening. I still don’t think it will make a difference in Reddit policy, but I now believe it will have a larger impact on Reddit traffic than I imagined.
I still expect it to have no change in Reddit attitude or really in Reddit users.
To replace Twitter you need public figures, celebrities, sports teams, etc. to move to the new site, unfortunately I don’t see them moving to a federated system like mastadon. Reddit would be easier to replace, as you follow communities rather than content publishers.
The Twitter migration will probably be to Meta’s new app once it comes out, it’d be an easy port since most of the accounts people follow on Twitter already have the Meta products.