We've been using a full Clojure stack (front-end + backend) in production for nearly 4 years and very happy with it (6-8 people full time). But that is very much anecdotal. I guess one thing to note is that the language is very stable, there are very few (if any) breaking changes and a 4 year old library will "just work" most of the time. Even more amazing is that it's trivial to port 40 year old ideas from (Common)Lisp if you're so inclined, or interface with a known good Java implementation. To me that is a big plus, personally I wouldn't even want a ton of extra features in Clojure ... the language is fine and libraries fill in the rest. It does give the impression that not a lot of happening and that it might be fading or boring, but in a lot of settings boring is actually a good thing. The amount of times some NodeJS or Python thing changed from underneath me and I needed to rework an entire codepath or build infrastructure just because the language changed their mind on how things should be done are gladly behind me with Clojure!