Postgres DELETE operations have a poor reputation for performance, but the article demonstrates they can scale effectively with proper optimization. The key challenge isn't deleting workflows themselves, but managing the cascading deletions of associated data across multiple tables and handling the MVCC (multi-version concurrency control) overhead that creates dead tuples requiring vacuum cleanup. By understanding Postgres's internal deletion mechanism and optimizing cache and index performance, DELETE can be used reliably in high-throughput systems processing tens of thousands of workflows per second.