Your justification is based on what a person or group of people thought a 3000 year old word meant and as you've mentioned in the past, word meanings change over time. Besides, I haven't found any pre W and C commentaries that express that very strange view of Micah 5:2 have you?
Words do NOT change meanings because people misuse them!!!
Before Copernicus realized that the world is round; everyone thought it was flat. one man was correct and everyone around him was WRONG. No matter how many people use a word improperly its meaning does not change.
The ONLY exception to this principle is that when large numbers of native speakers of a language consistently use a word in a new way over 20-30 years, the new usage may become accepted as correct. Mistranslations can NEVER accomplish this!