Yeah, no. I shouldn't know the basics of active directory because I'm not at the administrative end of that tool, I'm at the user end of it. I work with wildly different tools where AD and domains are completely irrelevant for my job. It's not even a siloed app, it's the whole sector of data engineering that doesn't touch systems management. That's a completely different speciality and it's as useless for me to gain experience there as is for my buddies that work in helpdesk and security to learn about distributed programming.
I agree with your assessment that having a global view is important, but that's not what helpdesk offers, that's what working on a startup of your sector offers, a wide array of tasks around the job you are specialising in.
Knowing how AD domains work doesn't teach me shit about proper terraform structuring, what's the best way to join multiple tables via spark, proper data manipulation, bash scripting skills (invaluable for my job and my buddies working at helpdesk know shit about bash).
You mention security, but disregard that there are tons of Devs that don't work on user facing apps, right now I'm working on automatic processes that access very well defined tables and write again in well defined places. I'm not the one designing the permission scheme on Azure or anything like that, what I need to know is how to analyse data, how to design proper ETL systems that are able to make and efficient use of distributed systems, and plan good validation tools of the coded systems. None of that interacts with whatever someone would do in helpdesk.
Helpdesk has a good vision on security issues facing users and how the access and permission architecture of all the tools at a company works. Very valuable work, yet irrelevant for me to have experience on it.
I would challenge the question right there and demand an expert counsel to explain why HyperTextMarkupLanguage is classified as a programming language when it's not even Turing complete. It's a markup language. Security would have to drag me, I'd die on the specificity hill.