People switch to Clojure from other languages, not just Java. I've seen plenty of former Java, Ruby, Python, C#, JS/TS, C++ and even Haskell devs who switched to Clojure and say - Clojure does feel more productive.
Re:State of Clojure 2020
by WillPostForFood on Friday February 21, 2020 @05:02PM
(#22387343)
More productive than the day before they switched, not 25 years ago.
This is the point. I still work in Java occasionally but I'm much more effective delivering in Clojure today - with 10 years experience, than I am in Java which I used my entire career.
Same host environment, many of the same libraries, same developer. Different language, different mindset.
Also, surely your 25 years of experience have nothing to do with you being more productive now than 25 years ago.