Distribution upgrades have never been an unobtrusive thing. Despite this, everything will continue working exactly as configured before the upgrade, which applies new configuration recommendations by the vendor. What is wrong with that?
What's wrong is the config file moved. If a sysadmin is used to a config file being somewhere they know, and then it disappears that can be extremely frustrating. Especially on a production system.
Which the sysadmin knows, because they reviewed the changelog for the major system upgrade they just did. You wouldn’t install a new major version of a database without any precautions either, right?
