Beyond the hype, the PostgreSQL community is aware of the lack of "batteries-included" HA. This discussion on the idea of a Built-in Raft replication mentions MongoDB as:

>> "God Send". Everything just worked. Replication was as reliable as one could imagine. It outlives several hardware incidents without manual intervention. It allowed cluster maintenance (software and hardware upgrades) without application downtime. I really dream PostgreSQL will be as reliable as MongoDB without need of external services.

https://www.postgresql.org/message-id/0e01fb4d-f8ea-4ca9-8c9...