> I’m pretty sure it’s a cool feature but, what a mouthful. Imagine you decided to start developing websites today, how do you even start?

You start where the docs say to start, https://react.dev/learn which wouldn't be mentioning this advanced feature, just like pretty much any tech. Reading postgres, python, etc release notes will have a bunch of scary sounding new features to a beginner, but those won't be making their way into the "Get started" section