No one should be surprised when the "language/framework for non-programmers" results in a codebase that was clearly made by non-programmers.
I haven’t seen anyone call Ruby/Rails a "language/framework for non-programmers". Nobody asserts that someone can or should try to build a professional-grade app or site without having a solid understanding of programming fundamentals.
It’s just a matter of what you optimise for.
Rails makes sense in startup land, where it’s more likely that not that what you’re building won’t turn out to be popular, so it’s best to test the concept as fast as possible to avoid wasting any more time than you need to.
You can easily rebuild in other languages if you’re lucky enough that scale, performance and maintainability become major problems. I’ve seen that happen at several companies including Twitter and Airbnb, and it makes perfect sense.