Are you just lazy? Apart from not being up to date with common ecosystems (which I'd expect when doing anything web), look at the Getting Started:

Getting started ->Installing with Vite ->Installing with PostCSS ->Installing the CLI ->Upgrading from v3

At the bottom of the CLI paragraph it says "You can also download standalone builds of the new CLI tool from GitHub for projects that don’t otherwise depend on the Node.js ecosystem."

They just put the most common stuff at the top, because that's what most devs will use.