There are many layers and dimensions. As pointed out that these days systems design, integration and how to interface is more important (and in fact in older days as well not sure why it becomes these days as system analysis is a job higher than programmer usually, at least 3-4 decades ago).
We need someone knowing this, just like we need someone to run the nuclear plant we use. But we do not need much those but we need more how to use electricity. Hence unlike another post physics are not the key even if it is more foundational.
For personal growth, it might be still though.
But frankly lisp is such a non-multi-system language, it has a hard time to deal with external world by its nature. It can be done as lisp is really the god level programming language. But as said it is NOT used by the gods for a reason.
We need find a system level language to express ourselves so that we can stand in giants. We need giants but no need to be one.