[layer8]

I don’t think abstractions are inherently tied to hiding complexity. The purpose of an abstraction is to abstract over variations of a thing (think polymorphism), where each variation by itself might still be simple, or to separate essential features (e.g. parameters you have to pass) from accidental features (e.g. implementation details), where again there is no inherent implication of complexity on either side.

In slightly different words, an abstraction separates what client code needs to reason about from what it should be able to ignore. Of course, if an abstraction isolates client code from certain complexities, that will contribute to the success of the abstraction. But it’s not the essence of what an abstraction does, or a necessary condition for it to count as successful.