Mastodon CEO Eugen Rochko has criticized Meta's new moderation policies, which eliminate fact-checking in favor of a community notes feature. He described these changes as 'deeply troubling' and a threat to marginalized communities. Rochko warned Threads users who cross-post to Mastodon that hate speech violations would be acted upon. The integration of Threads with Mastodon raises concerns over content moderation and the potential for increased hate speech. Some Mastodon servers have already blocked Threads accounts in response. Rochko urged Threads users to consider transitioning to Mastodon as an alternative.