Maintainer of BlockNote here (and contributor to HocusPocus). I can't speak for Docs as to why they chose BlockNote, but can answer some of your questions. BlockNote is actually built on top of Tiptap - but designed to take away the heavy lifting. As powerful as they are, to build a Notion-like editor on top of Tiptap (or Prosemirror) still requires quite some engineering firepower. We've built BlockNote to come "batteries-included" with common UI components and a simpler API to make it easy for you to add a modern, block-based editor to your app.
That's very cool, as a happy user of TipTap this is the first I've heard of BlockNote - excited to check it out. I've also built a few modest things on top of TipTap and felt a slight "tower of babel" unease, would you mind saying a bit about what BlockNote takes from TipTap which couldn't be accomplished with Prosemirror alone?
This comes from a place of pure curiosity, I don't actually believe this strata of editor packages is in any way inherently bad!
