These patches have been split off the now deprecated monolithic "Delegating superuser tasks to new security roles"
threadat [1].
The purpose of these patches is to allow non-superuser subscription owners without risk of them overwriting tables they
lackprivilege to write directly. This both allows subscriptions to be managed by non-superusers, and protects servers
withsubscriptions from malicious activity on the publisher side.
[1] https://www.postgresql.org/message-id/flat/F9408A5A-B20B-42D2-9E7F-49CD3D1547BC%40enterprisedb.com
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company