Does it make sense to point thanos ruler to query frontend instead of query?

[benjaminhuo]

I can see in the official doc that the ruler can point to a query to fetch metrics to calc recording rule or alert rule.

And the architecture shows the same.

But mimir's ruler can fetch data directly from query frontend:
https://grafana.com/docs/mimir/latest/operators-guide/architecture/components/ruler/

Does thanos ruler supports fetching data from query frontend or have plan to support this?