Not really self-hosted in the typical sense, but Obsidian with the Tasks and/or Kanban plugin synced through a (self-hosted) solution of your choice could work?

Haven’t tried the whiteboard tool in Google keep (didn’t even know there was one), but the Excalidraw plugin for Obsidian should cover almost any whiteboard use case I can think of. A bit more limited but also good is the native Canvas plugin in Obsidian.

I’ll use it anyways. Because, fuck it, I despise people like that

The problem is not about the person you intend to insult “earning it” or not, the problem is that by your choice of insult, you’re implying that you also despise other mentally impaired people, no matter if they’ve done anything wrong.

It’s not really about privacy, though. It’s about the risk of Meta going “Embrace, extend, extinguish” on the fediverse, and the only way to protect against that is by not letting them interact with the majority of it from the get-go. https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html

It’s not only IPs and emails though. Since users can put whatever they want in comments and posts, all of those must be treated as potential PII, and have to be included in subject access requests and deletion requests.