I'm confused by this take. In general, LLMs don't replace the expertise required to use an LLM.
Knowing the right input to give the LLM is not enough, nor does it ever end. The LLMs themselves need to be continuously updated and/or specialized for use case, and the "right input" is a moving target.
Keeping both ends of this aligned is the exact same expertise we already had before LLMs. These implementation details would only impact the credibility of those researchers who don't adapt to using this new tool. Who would stumble over something as trivial as this? LLMs aren't even the most important tool in the toolbox anyway.