I stumbled on docs that heavily reference the defunct Project Tiny.
https://docs.unity3d.com/Packages/com.unity.2d.entities@0.32/manual/index.html
The page also has a link to this Google doc DOTS Runtime & Project Tiny: Getting Started [Public] - Google Docs
As far as I know Project Tiny isn’t going forward so perhaps these docs should be delisted?
They might confuse new users who want to get started on a 2D project because they imply that Tiny is where things are going:
2D Entities is a package that provides Unity Editor visualization for 2D content in Project Tiny. Project Tiny is Unity’s upcoming highly modular runtime powered by DOTS, that enables you to build instant games that are small in size and both load and run quickly on mobile and web platforms