This one seems to be more database-specific use case. The advantage is probably that you can track the exact state of the job in the database itself, rather than having to cross-reference the workflow log with the codebase and trace through it line by line to figure out what the state is. Plus I assume it's less overhead and latency, and operationally one less thing to spin up.
[1] https://learn.microsoft.com/en-us/azure/durable-task/common/...
Indeed Durable tasks is an exceptional project and was a unique innovation at the time.
pg_durable brings the same reliability and durablity semantics to long running operations within the database.
We have tons of interesting scenarios on the roadmap. Stay tuned! :)