How is it good? I've only had the misfortune of working on two React apps, but they were both a nightmare. It seems like React is great if you have multiple teams that hate each other all working on the same giant frontend app.

https://medium.com/@fulalas/web-crap-has-taken-control-71c45...

It's good because it's popular, which doesn't really mean it's good. See Java. It works and rakes in billions, but it still may be utter shit from an engineering viewpoint.