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.
I sometimes tell people to try the network troubleshooter if they're having issues because it's idiot proof. All it'll do is occasionally disable and enable a network adapter which can fix some common problems. If you're even the slightest bit tech savvy though, ignore it.
Startup Repair has been useful when I've actually gone to use it, but I can count on one hand how many times I've gotten to that point.
Otherwise, no.