AIO uses postgres, but nextcloud documentation recommends mysql. Why the disparity?

[DarkPhyber-hg]

So my current docker based nextcloud install is using mariadb, and i'm thinking about converting over to the AIO. I realized that the aio install uses postgresql. I normally look up best practices when setting these things up, so I decided to look into it.

the Nextcloud documentation recommends mysql/mariadb
https://docs.nextcloud.com/server/latest/admin_manual/configuration_database/linux_database_configuration.html

and system requirements section says the same thing

https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html

however, i found a post here where @szaimen says Postgres works better than mysql/maria
#2202

So i guess my question is, why the discrepancy? Ultimately the AIO uses postgres, so it seems that's the answer, is the documentation just out of date?

[szaimen]

The main reason is that the Nextcloud GmbH has more people being familiar with mariadb/mysql than postgresql. Still, postgresql is more advanced and works better and it is also supported, that is why it was chosen here.

[xalt7x]

@szaimen
Is it possible for Nextcloud team to reconsider the recommendation of MySQL in favor of PostgreSQL?
I believe, it should reduce issues for newcomers (e.g., "1213 Deadlock found...").
Some time ago DB conversion was an option but currently it's broken/disabled.
With PR 48666 applied, conversion works fine on instance without installed applications. However, it seems like DB migration script still needs some improvements for apps like "Talk"

The following tables will not be converted: oc_talk_commands"

Thanks!