> They’re smart enough
I worked at a small company that had a policy of putting devs on front-line support in a rotation, both because it was too small to have dedicated support staff and because the owners wanted devs to understand how users interacted with the system better.
I can assure you that while some users merely think differently than devs, there is cohort of users who are absolutely not smart enough. It's impossible to do any amount of front-line support without collecting some horror stories.
There's a selection effect here in that smart-enough users won't bother contacting support if they work around an issue on their own, or if something is actually a non-issue for 99%+ of the user base. The ratio of usage and support contacts can be monitored. I fear a lot of devs develop unproductive mental models of the user purely from a minority sample.
One of my favorites is spending nearly 10 minutes trying to get someone to read a single word on their screen correctly, in a dialog box that was blocking them, containing fewer than 10 words, so I could find the cause of their problem. After nearly 30 minutes to figure out that they had a popup blocking them, and not "the computer doesn't work".
What eventually worked was getting them to spell it to me backwards. That strategy has worked out quite well in other cases too - I suspect because it avoids some of people's built-in autocorrect and dyslexia (autoincorrect).
(I honestly mostly enjoy tech support, and I've done it for many years, sometimes professionally. But some people do seem like lost causes, and are not just having a bad day)