Source: worked AppleCare
I don't think any enterprise clients would mind a strict HCL.
Often I'll just voice my opinion and try to convince management even if it doesn't directly affect me (I don't work support). I think that, generally, we all benefit when things are done well and relations are not adversarial.
In the specific case of NAS support, I doubt that would make a lot of difference. I bet 90% of people will call about their NAS not working without first checking that it's actually plugged in. Why do you think this question is on top of the list? Had a very similar complaint last Friday: I work in infrastructure, and some people were installing something that needed networking. Dude comes up: "I don't get any network". Huh. I ask if it's actually plugged in. Nope.
Blow the dust out of the connector
https://devblogs.microsoft.com/oldnewthing/20040303-00/?p=40...
That's how we all benefit. But if a company wants to benefit more than you, they can. That's how enshittification works.