SELinux security vs WordPress updates

No.

First there is the practical problem of enabling your OS being influenced by the web server, something that should never be possible. (a plugin will trigger an update and make you open to all attacks)

Second, on a more philosophical level, what is the point of hardening your security if in the end you let any script being installed on your system without any minimal audit.

Security is many times not convenient… If you have nothing of value to protect then you don’t need the SELinux layer, otherwise I can’t imagine how justify relaxing your security for even a minute just to save few hours of work a month.

…. In addition, you should always test new versions of plugins and themes before deploying them to production and never ever use unsupervised automatic updates.