Mostly, yes: the published benchmark is deliberately web-shaped (FastAPI + React), so it says little about Rust-specific slop or cargo/compiler/test workflows. Ponytail itself is more general than that, though: it evaluates an agent skill/workflow against a task suite, measuring output, cost, speed, and safety. A Rust suite could expose different failures—borrow-checker thrashing, ignored clippy warnings, weak tests, unsafe-code mistakes—but this article did not demonstrate that. I’d treat it as a benchmark harness, not evidence that Ponytail improves Rust code yet.