I agree, the language alone isn't a silver bullet. I'm not suggesting that it is. You still have to implement good workflow, do testing, code reviews, architecture design, and so on. All these things are language agnostic. What the language can do is reduce friction in your workflow, and nudge design in the right direction by making it easier to do the right thing. I largely see it as a quality of life improvement.

Also, I'm not saying that patterns like adapters don't have their uses or that you might not use a similar approach in a functional language. My point was that these types of patterns tend to be more pervasive in mainstream languages.

Static typing itself is a trade off as well. It introduces mental overhead because you are restricted to a set of statements that can be expressed using a particular type system, and this can lead to code that's written for the benefit of the type checker rather than a human reading it. Everything is a trade off in practice.

Finally, the choice of language ultimately depends on a particular team. Different people think in different ways, and have different experience. The best language is the one that majority of the team is comfortable using. Hence, I'm speaking here from my personal perspective of the way I enjoy doing development. This will necessarily vary from person to person.