So what about streams? Functions? Closures? Call/cc structures?

I understand your point if you are speaking in literal terms about just simple cons cells, but in practical Lisp/Scheme code, you don’t really rely on just the basics to do things.

I think there’s a hyperfocus sometimes on the simplicity of the core of lisp, the apply/eval balance, but it’s quite possible and often easy and convenient to perform normal programming tasks with these languages as well.