Yeah. While at the subject of nits, it´s a curious thing how the meaning of a word can evolve with time.
Today "nitpicking" is almost out of use with the meaning of being the act of removing nits from the host's hair. Unless you are talking to a biologist.https://www.youtube.com/watch?v=FbwiN-dOH2w
Now when someone read or hear nitpicking what springs to mind is somebody who finds faults, however small or unimportant, everywhere they look!