Nextcloud asked in a poll at https://mastodon.social/@nextcloud@mastodon.xyz/115095096413238457 what database its users are running. Interestingly one fifth replied they don’t know. Should people know better where their data is stored, or is it a good thing everything is running so smoothly people don’t need to know what their software stack is built upon?
There could be multiple factors. For example, I have a Nextcloud instance that is fully managed by Hetzner, and I didn’t bother to find out what database it uses…