Don't Trust Facebook

React is malware.

Please provide samples of any malicious code that can be found in the React source code.

Unless you can show anything like that it's impossible to take a post like this seriously.

Disclaimer: I didn't watch the video, however:

I used to hold this sentiment (of "Facebook's direct access to everything [React-related]") before I started using React, but is it really true?

I'd be interested in seeing either code within React or some other documentation that shows this to be a matter of fact, as React can run completely offline w/o any network connection at all.

And there's 5G in vaccines...

TLDW: Facebook good, React bad, because React is not truly open source.

I'm not saying that you're wrong (too lazy to check the facts right now). But you still need to explain how it's malware, because there's clearly no remote access as you claim in your post.
From my perspective you're just trying to sell your book with a very poor attempt of advertisement.

What has this to do with Development?

I personally don't use react, I ❤️ Vue.
But this just seems like a shameless ploy to sell the book.
I just hope we as a developer community are smart enough to not fall for the lie. I have nothing against you but I hope no one, from here atleast purchases your book.