Splitting hairs is arguing over a difference too small to matter. You are splitting hairs.
It is a complaint, and whether it is fair depends entirely on whether the difference matters. Lawyers and editors are paid for splitting hairs, since sometimes the small difference is the whole thing.
1phrasesplitting hairsArguing over a difference too small to matter.
“The two words mean the same and arguing about them is splitting hairs.”
splitting hairs is a phrase.
Practised in Idioms