Restrict super user write access to some files
SelfControl
SelfControl is an open source project aimed at restricting distractions:

SelfControl is a free and open-source application for macOS that lets you block your own access to distracting websites, your mail servers, or anything else on the Internet. Just set a period of time to block for, add sites to your blacklist, and click &quot;Start.&quot; Until that timer expires, you will be unable to access those sites—even if you restart your computer or delete the application.

Pi-Hole
To block distracting websites and services on all your devices, consider blocking them on your network using Pi-Hole.
With this approach you avoid needing to modify your macOS configuration.