Yeah, there is a lot of (developer driven) hype around new tools. I see it as both negative (hard to keep up, confuses those new to JS) and positive (lots of innovation and people trying many ways to solve things).

If you want to learn a front end framework, pick one that's got a lot of community support (Angular, React, maybe Ember or Vue) and focus on it. Don't get distracted. Even when things change, it'll be good for a long while.