I think one of the issues is that Rc and Gc are not particularly ergonomic! Used at scale, they add noise/non-readability to any screen of code (Rc::clone, the

I think one of the issues is that Rc and Gc are not particularly ergonomic! Used at scale, they add noise/non-readability to any screen of code (Rc::clone, the various approaches for Gc in [0], for instance) that simply wouldn't be there in a dynamic language. Now, one might argue that this explicitness is good! But it's definitely an extra bunch of things to type when you're building something where you don't care about memory management. [0] https://manishearth.github.io/blog/2021/04/05/a-tour-of-safe-tracing-gc-designs-in-rust/ https://manishearth.github.io/blog/2021/04/05/a-tour-of-safe...