Tumblr’s connection to the “fediverse,” or decentralized social media, appears to be proceeding despite delays. After acquiring Tumblr from Verizon in 2019, Automattic CEO Matt Mullenweg tweeted that the site would “soon” support ActivityPub, the protocol behind Mastodon and other decentralized social apps. Tumblr’s progress wasn’t clear after that announcement. To complicate matters, Tumblr recently …