Most of the languages are constantly changing but the JavaScript world is way faster than anybody else moves.
Although might be over-hyped, I personally believe it's more a good thing which moves the community even the industry forward. React was kind of enlightened the functional and reactive patterns to the mainstream developer community.
In contrast, most of the back-end communities still struggle with data synchronization between microservices, while all modern front-end frameworks are able to update all of the view or other read models almost magically.
If anyone wants a more specific example, I think it's quite shocking to me that there are only very few back-end architectures knows clearly how to design a whole large scale architecture push WebSocket notification for a given user -- just like typical google suite stuff. WebSocket has been there for years, there are so few people know how to develop and operate a stateful service... unbelievable.
I agree with that shipping business functionality is the most important value in technology. However, I feel most of the back-end communities worries about the problems they are encountering too much. And they don't really care about the art of the programming itself, yet advanced architectures indeed require language or platform level construct, for example, immutable data structures are much easier to be concurrent safe, or just the computation should be pure to be safely rescheduled on other core or machine, etc.
In the front-end world, I think for example React and Mobx which I'm using are pretty much taking care of most of the accidental complexity of software development. In the back-end world, I can imagine something similar to a full-blown framework like Rails but built on top of something like Orleans or Lasplang would help us get rid of all the accidental complexity, and just expressing the domain itself instead. We're still too far from there.
A quote from SICP lecture:
https://youtu.be/2Op3QLzMgSY?list=PLE18841CABEA24090&t=81
"And the Egyptian who did that, geometry really was the use of surveying instruments. Now the reason that we think about computer science is about computers is pretty much the same reason that Egyptian thought geometry
was about surveying instruments."