In reality, the "expertise" in the high-end is mostly measured by the success of the designer/manufacturer/dealer/writer in real audiophile world, not just in the very small WBF audiophile community or internet popularity methods.
I consider myself an amateur audiophile and find the WBF epithet shown under our nicks a funny exercise of administrative power ...
I agree with this Francisco, but I think it can be extended to individuals who have a lot of experience in the hobby with a lot of equipment and can analyze the system and figure out how to improve it and set it up properly for better sound. I include Jim Smith in that category.
What is best is a good one. Sometimes it’s only what is better.