Simple example: Who will renew the SSL cert? Day 1: meh, no impact. Day 2: meh, no impact. Day 700: who the hell manages this and why are we making no revenue?
You might think that is laughable; what a pack of newbs!
But this stuff has already happened without even LLMs in the mix.
https://www.digicert.com/blog/lessons-from-the-equifax-data-... comes to mind.
The number of flea circus level orgs where someone has flubbed it and been on leave, causing a few hours outage? More than one in my experience.
Where it's more hostile? https://www.reddit.com/r/sysadmin/comments/1itiu8n/it_team_f... is a common narrative.
[1] Some examples: https://danluu.com/nothing-works/
The hard question, one which everyone and everything who isn't a domain expert (so AI, juniors, and quite a lot of managers and politicians) suck at, is "which things are safe to break, and which things really do need quality?"