[stcredzero]

high performance ones are as complex as tracing GC ones, while having the burden of forcing the developers to explicitly deal with cycles.

I bet there are plenty of game developers who would be only too glad to arrange their references as a DAG, if they could have guaranteed low latency.

[pjmlp]

Maybe, but if they don't take care, some stack overflow surprises might happen, the fun of cascade deletions.