That's because all they know how to use are iPads. They don't actually understand how real computers work.
Plus of course there is this attitude that if it doesn't immediately work on its own you should give up and just pray to the nebulous entity that is "IT people".
You wouldn't believe how many people get annoyed that I don't know what their password for something is.
For me it's recovering my boss's files from his broken mac.
I have decades of experience in Linux. I can invoke the recovery shell and rsync his files onto a USB stick. But save that locked down OS? No idea. I'd have to watch a video and hope I don't make a mistake.
The thing with Mac is, it's easy if you set it up correctly and if you haven't set it up correctly (as in you have left it in default mode), it's borderline impossible.