Not "this". By that logic most people do not need backups too. Rebuilding working service state after config change is non-trivial, requires using admin-only kernel interfaces, and said kernel does not care about these types of problems. Meaning average user ends up simply rebooting rather than trying to figure why enabling wifi makes printer stop working (and such). We cannot have network stuff controlled by multiple programs, because linux kernel is broken like that. This thing is the userspace part of the monolith.