Not a single mention of CRDTs or operational transforms in the article. If all you need is a client side database to replicate Figma and Google Docs then they would have long shut down.
"as long as we’re okay with having a single leader, and are fine with last-write-wins kind of semantics, we can drastically simplify this and just facts are enough"
It's not a direct reference to CfRDTs or operational transforms. They're not wrong that last-write-wins is easiest to implement, but some applications it doesn't quite cut it.
Most CRDTs (last-write-wins being one of them) will result in a terrible user experience, and nobody would want to use it for collaboration. That's why most of these collab systems use OT, which is not trivial to implement.
