Hi rhonic
"My verdict - 99% of wear and damage to clothes occurs on the body..."
I don't dispute that front loaders are gentler on clothes. What I am pointing out is that the statement sounds more significant than it actually is.
Now, brisnat's experience with his shirts is proof to him that his front loader preserves his clothes and maybe that is true. Based on my experience I would consider that there may be another reason that has contributed to his shirts' improved longevity, since his switch to a front loader. Collars and cuffs are the first things to go on any shirt. Over the years some of my shirts used to wear out relatively quickly in those places, whilst others, many of which are now more than 10 eyars old, still look like new and they get worn and washed at least once a month. Some of these weren't even expensive or of any notable label, whilst some of my most prized and costly shirts turned out to be disappointingly average in quality.
Unless there would be damage of some sort to the agitator, I can't think of any reason why or how it can cause prolonged and concentrated abrasion in specific areas, i.e. collars and cuffs and not the rest of the shirts, it doesn't make sense. If the wash action is so much more abrasive overall wouldn't that show anywhere on a shirt, not just cuffs and collars? That said, there were and still are some types of top loaders, especially impeller washers, that could be more likely to cause intensified and abrasive friction overall. Though, with most of the center post agitator top loaders available, I can't see how, unless it comes down to the user, chemical and other agents.
I have satin and brokade table runners. They are decades old and look like new, even though I do wash them in my top loader with no issues whatsoever. Had I a front loader, I would get exactly the same results.
Domestic appliances and water consumption, like gentleness, is another one of those issues that sounds much bigger than it really is. People get manipulated into ways of thinking that often distract from the basics and principal purpose of the products they buy or the issues that need to be resolved. I am all for doing the right thing for the environment, but with a good dose of '(un)common sense'.