I'd counter that with dynamic language, easy modularization and the ability to create single function modules that are composable, and written as such, that code is more easily understood and doesn't require the same type of testing as more complex systems in static language, that lend to layers of indirection and complexity for the sake of testability.

I'm not saying that testing isn't needed in either place, but a lot of the times "enterprise" practices that leak into scripted environments make code far more complicated and difficult to understand than it needs to be.