Currently we the choice between NS_INLINE_DECL_THREADSAFE_REFCOUNTING and NS_INLINE_DECL_REFCOUNTING NS_INLINE_DECL_THREADSAFE_REFCOUNTING imply that the class is thread safe when it may not be. NS_INLINE_DECL_REFCOUNTING on the other hand while clearly thread safe will assert if the object is deleted on a different thread than it was created on. That makes it unusable in a task queue's thread pool where which thread is actually used to run the task is non predictable. We should have a THREAD_POOL_REF_COUNTING THREAD_SAFE_REF_COUNTING.

Is this still a thing?