To be frank, the language just isn’t
boring enough.
In my experience, a company’s code should be like the style of English used in an instruction manual. It should clearly and plainly express the business logic behind the company’s mission.
Ruby is more like writing poetry. There’s nothing stopping one from writing boring, unambiguous, clear code in Ruby of course. As a Ruby developer, I’m sure your code looks very clear.
The reality is that other languages make it easier to enforce clarity. See gofmt for example, which standardizes Golang’s formatting, taking one more axis of “creativity” away from the less disciplined developers.