Yeah, basically that. I’m back at work in Windows land on a Monday morning, and pondering what sadist at Microsoft included these features. It’s not hyperbole to say that the startup repair, and the troubleshooters in settings, have never fixed an issue I’ve encountered with Windows. Not even once. Is this typical?
ETA: I’ve learned from reading the responses that the Windows troubleshooters primarily look for missing or broken drivers, and sometimes fix things just by restarting a service, so they’re useful if you have troublesome hardware.
It isn’t accepted as a fix, because it doesn’t fix the issue.
Reinstalling is done for speed. Because it is quicker to nuke something and build it back up, than to go around and fill all the cracks with concrete.
In business, it is more important the system is back up and running than to have found the fix to the issue.
This is true for every OS.