I think we Eatwell deniers are dealing with the situation as it is at the moment - the population in general is becoming fatter and sicker, mobility in older people is becoming reduced for a higher percentage of the population, unable to walk, climb stairs, requiring assistance for everyday living, problems with coping with various foods, most notably gluten is increasing. Food intolerances are increasing - or at least that is what we are told, IBS is common, problems such as PCOS are appearing more frequently, but that seems to respond well to eating low carb, to judge from messages to the low carb forum I found on Facebook - so does IBS and diverticulitis, for some.
I have read William Banting's 'letter on corpulence' from the mid 1800s and he likened the normal diet back then to feeding a horse on beans - which they are able to cope with up until the time when they are no longer able to do so.
I believe that the basic premise of Eatwell amounts to what someone young and fit can eat, up until the consequences kick in.
Having been put onto carb based diets again and again during my lifetime the restoration of vitality once I stop the stupidity is very familiar to me. I am just thankful that I survived to this age of 68 as well as I have done and am now regaining strength and energy yet again.