People buying an open backed low sensitivity headphone that requires an amp to drive properly would know what EQ is I think. If this was a review on Apple air pods then fair enough, maybe they wouldn't.

The point of consumers reading reviews is to help them make an informed decision. If applying EQ to a headphone improves enjoyment or lessens some of the drawbacks of stock tuning it is fair for this to be mentioned in reviews. I didn't say that the review should only mention sound when EQ'd. If it doesn't improve enjoyment then that also is fair to say. Nothing dishonest about that IMO.

"Closing the gap in performance" - sounds like a positive thing for me, especially if it is free to do so.