> Ironically, overly restrictive inputs cause users to think that the software doesn't properly understand the domain, which is the root of mistrust.

Well, they're quite likely right! I freely admit that as a developer, I don't understand the domain remotely as well as the people working in it (construction workers in my case). The reason there's still a decent market for custom software and that the likes of Epic haven't gobbled up everything, is that every so often a construction worker, dentist, nurse or whatever picks up enough programming to actually make something that suits them, and they manage to bypass the administrators addicted to sales dazzle.