Looks like SubDagOperator is being deprecated in Airflow in favor of TaskGroups. Since TaskGroups are only a UI grouping concept and all tasks still belong to the same DAG, I think some functionalities such as being able to BackFill an individual task group (which you can do with SubDags) will not be available.

Does anyone know if this is possible, and if not, what could be a workaround to this limitation?

Thanks!