I actually landed on that link a week ago, and gave up on learning reactjs.
I've heard of the various JS frameworks over the past two years, but only until this month I was considering using one (NIH mentality @ work). I tried out AngularJS and it made sense, but I had issue after issue with npm deps. I tired of web searching, and went to my default search engine (DDG) to look up reactjs.
Just an anecdote I felt like sharing. I upvoted grandparent because someone took the time to downvote him, but believe it or not, I wasn't going to click the link until I read the commends and had him clarify it for me.