I understood your first comment without expanding on it like this. You also don't need to explain what reference counting is.

> GC isn't "the fastest" to free objects, it has to walk a graph.

No, you don't inherently need to. And what I said is that it's super duper fast to produce garbage. I did not say that actually freeing the underlying memory, or any other cleanup, was fast.

I'm not even arguing for GCs, here. I even think GC languages tend to become tech debt generators, as garbage is not addressed until it's a really complex problem with no good solutions.