Reminds me of a colleague who RDPed into each of our 140 subsidiaries to change a config file.
He had a list of servers on his desk and ticked off every server.
Took him the whole day to apply the changes.
(Also: lots of folks really don't enjoy learning new stuff. Or new ways of working. No, they really don't. Even if the new techniques are vastly better and more efficient. Put this down to a human cognitive bias favouring the tried-and-trusted over new-and-untested. There's a lot to be said for that when you're a neolithic hunter-gatherer or an iron-age peasant -- if you try something new and it fails, you maybe get to watch your family starve next spring -- but it's a bit less useful as a rule of thumb in the data centre.)