It’s pretty much by design, as the syntax and standard libraries with lispS are intentionally small. In other languages, you see new language syntax or semantics being added, while in a lisp it’s pretty much unheard of to change the syntax, there’s so little to change.

Macros can do a lot of stuff, and as such libraries themselves can add pretty elaborate functionality.

Having said all this, what I do notice with my experience of Clojure is that there are certain “trends” in how you write code. The language itself may not evolve that much, but the styles people write code in it, and how they solve problems, certainly does.