Regardless of these complaints, the job market for React is just too damn good to ignore. I bit the bullet and began learning. As a newbie, I understand the sentiment of this article. However, it's really not as bad as the author makes it out to be.
Also, className instead of class took all of 3 seconds to learn.
className is a small inconvenience when porting over an existing app to react (e.g. pasting in existing html), as is the requirement for style parameters to be objects. className is a quick find replace, but style is a more lengthy transpose process.
These are small frictions, but in the same way that every ounce/gram counts to a hiker, minimizing process frictions makes a big difference in productivity during times you already have a high cognitive load.
Also, className instead of class took all of 3 seconds to learn.