I read the PDF report from Mastodon about usability problems and feedback from the community. Imani Joy in the intro:

We were beginning to find our way in terms of creating a development roadmap, but beyond major projects and obvious requirements (based in security, compliance, and grant-based deliverables) it was often unclear which feedback to take action on first.

Imani has done great work on this. But Mastodon development has always felt like a slow-moving open source project to me. What they need is the same energy as a startup.