Except that obligate ARC ala Swift has even lower throughput than obligate tracing GC. It's the worst possible choice unless you really care about low-latency

Except that obligate ARC ala Swift has even lower throughput than obligate tracing GC. It's the worst possible choice unless you really care about low-latency and deterministic freeing of resources (and even then, using RAII for common tree-like allocation patterns like Rust does will perform better).