I don't think that's true. For instance, Python has traditionally been really bad for concurrency but Lisp can be best-in-class (see Clojure's STM). Python is g

I don't think that's true. For instance, Python has traditionally been really bad for concurrency but Lisp can be best-in-class (see Clojure's STM). Python is good for single-threaded concurrency now with coroutines and libraries like asyncio, but it still can't compete with something like STM for multithreaded concurrency.