In the JS world, there's no mastery. People just keep jumping to newest versions and spend all of their time fighting the new problems. Just. Stop.
The company I work for almost standardized on react/redux. We're not done getting rid of our old stack that people are already looking at Relay Modern, Apollo, MobX, etc. If it wasn't for our investment in a massive home grown React component library, there would probably be VueJS all over the place.
So we lose the ability to help each other. Every team is different, dealing with different problems. We can't build libraries since we don't have a platform to target. That to me makes us much weaker.
So I welcome boring. I welcome the day when people are no longer interested in it so they stop spamming npm to check if a new version of their favorite library is out to upgrade to it when the existing one is working fine.