I could not agree more! To me it seems that most of what is happening today is an exhausting chase by some developers to fill their CV / Resume with the latest buzz word technology, resulting in a shallow understanding of deep fundamental concepts and years of experience on a CV that means absolutely nothing.
As a college senior, this has been my problem—constant context switching to "keep updated". It really is a problem. My resolution for this year is to just focus and get good at at most two languages and their ecosystems.