Soft skills isn't just about being nice.

It's about knowing the capabilities of people, what can they do, what do they excel at and where they need support.

The exact same applies to LLMs, each of them have their own very distinctive styles as well as strengths and weaknesses.

Just like human engineers, LLMs can't just be plugged in to the same role as the previous one with the same instructions and expect the same results.

Thus: soft skills.