I think some of this is being over-analysed.
Anecdotally, very few people, if any, come on here and complain about their FUE scarring. With FUT it is more of an issue, and much more obvious to the naked, untrained, eye. I frequently come across posts from guys who are seeking to have FUE to repair a scar from FUT, such as this guy:
http://www.hairrestorationnetwork.com/eve/176844-do-you-think-huge-scar-can-repaired.html
The scaring from FUE is much less obvious which is why people opt for it. It has a market because people are concerned about the linear scar from strip, why else otherwise would people elect to have FUE when the yield from FUT is supposedly better?