Doesn't most of the JS fatigue come from the build process? I don't see anything about that in this post.

Why would it? This isn't a post about javascript fatigue , but how the top three “modern” frameworks are all component based and are very similar.

"If 2016 was the year of JavaScript fatigue then 2017 was most certainly the year of convergence." First sentence.

Granted that then it focuses on how major frameworks start converging. But then the 1st sentence is kind of unrelated. What generates JS fatigue is not that frameworks are different - at least, that's not the reason I read about more often.