Sure. But if Redis was embeddable you'd get a robust C-FFI style implementation of those data structures which has been tested a lot more than some random library that has almost no existing users or active maintenance.
(I'm not personally sold on embedded Redis myself, but the question was "Aren’t your own programming language’s constructs much more well-defined / understood?")
> you'd get a robust C-FFI style implementation of those data structures which has been tested a lot more than some random library that has almost no existing users or active maintenance.
What are these mystical random libraries you're talking about? There is a solid C implementation of every data structure on this planet.
(I'm not personally sold on embedded Redis myself, but the question was "Aren’t your own programming language’s constructs much more well-defined / understood?")