A number of instances defederated from it because... well, the reason a number of people are here is to not be on Reddit and seeing a mass deluge of content ported from Reddit defeats that purpose. There other other reasons too, like the fact it makes a ton of submissions and each has very few if no comments leading to the impression of a very barren community.
Yeah, makes sense. I wonder if there's going to be a mute/shadow federation function so that the instance doesn't show up in /all, but you can still subscribe to a community to see its posts on your subscribed page.
I debated blocking the instance because it's literally just a bot copy and pasting reddit posts, but you can ask the bot to copy/paste content from any subreddit and there are a lot of amateur porn subreddits that I kind of miss...well, used to anyways.
Maybe I'm naive but I don't like broad defederation from a platform. That's what will ruin the dedicerse when the money and large companies creep in. Imagine Sony vs Microsoft video game wars with exclusives. It's a system designed for decentralized enjoyment of all. Banning/blocking instances from other instances by default is problematic to the health of the basic idea of federation.