I don't really get that impression at all.
While Hugo documentation is not great, it does exist and given that this is open source, I assume you or I could improve it.
I have asked issues both on their forum as well as on git and while terse the main personalities have never been rude or condescending.
You certainly don't need to know Go to use Hugo (thou knowing Go templates and it's dsl will help).
If it helps you, I use a Go templates VSC plugin when editing Hugo templates.
I would love to know more about where you are having issues.