"Getting Started" description of MacOS is confusing

https://www.haskell.org/ghcup/install/

This page lists three MacOS's: MacOS, MacOS >= 13, MacOS < 13. I'm not sure what 13 here means. (The latest major version is 12, IIRC.) Guess it's 10.13?

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information