looks like mstdn.kemono-friends.info cloudflared their activitypub endpoints, hope rejecting will work, queue seems to be going down
$ curl "https://mstdn.kemono-friends.info/.well-known/webfinger?resource=kita_kitsune@mstdn.kemono-friends.info" <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title>