Ehhh, except that rust's borrowing system is a really great aid to prevent those sorts of things. And, one can easily make a thread responsible for deallocating

Ehhh, except that rust's borrowing system is a really great aid to prevent those sorts of things. And, one can easily make a thread responsible for deallocating the cascading objects. The point being that reference counting allows one more control over how deallocation is done. Besides, the real time capable garbage collectors are basically just backed in implementations of exactly that. With reference counting, it can be written in the language itself, rather than as a tunable external part of the implementation, which is useful.