I didn't vote this down, and while I agree that React, Vue and Angular are the 3 main frameworks to consider and have some understanding of today, I disagree that Angular is best, and some of the opinions in general are highly subjective.
The pros/cons are all biased and it shows. I don't think the author has even a good understanding of each of the libraries/frameworks compared.
Angular is a framework, it's very hard to isolate parts and/or replace them in practice. React is almost purely a rendering library, though some of the recent hooks and the new Context interfaces close the gap. Vue is closer to React on this, mostly a rendering library with what feels like tighter integration into the browser.
I have my own bias towards Vue for bog-simple stuff you might have used jQuery for. React for anything bigger than that, and dislike Angular entirely. That said, pick your poison here. It's worth understanding and reviewing all three.
The React ecosystem is probably larger than the other two combined at this point. Vue will probably catch up a lot this next year. Angular will continue to be used by corporate drone developers who generally don't know better.
That's my $.02, and I wouldn't even recommend reading TFA.