Unfortunately, I can second this, both as a developer and a user. His IMHO childish behavior has ruined his image for me, and is not a good lighthouse for the Fediverse itself. Also, as a OSS veteran myself, I see it extremely critical that he is starting new projects all along, denies to get proper help and build up a maintainer team, and leaves older projects in the dust. Pixelfed is the one product he might should focus on, jet it feels like the platform is in maintenance only mode. Pixelfed is a wonderful addition to the Fediverse and deserves to be on good hands.

Maybe, and this is a very personal opinion, his product success and the Kickstarter campaign raising over 100k made him feel like he's better than everybody else. And one can see the effects.