What a nasty, ignorant load of crap.

Population studies show that up to 3% of the population may be celiac and it isn't based on income but unfortunately for most of those people, those studies also show that up 97% of them are undiagnosed because U.S. physicians are taught an outdated model of celiac disease which fails to recognize the full range of symptoms. Other recent research suggests up to 30% of the population may have non-celiac gluten sensitivity, which commonly results in neurological problems, so of which may resemble AlzHeimer's disease. The problems for the low income segment of the population are that a) they often lack access to health care to get a correct diagnosis and b) lack the financial resources and access to healthy food options so that these people continue to suffer from a variety of health problems due to consuming gluten.

Potentially one-third of the population has a variety of health problems due to their immune system's reaction to a specific protein. Other societies have recognized that providing a safe food supply for the whole population has net benefits to society: reduced usage of health care resources, reduction in learning disabilities and behavior problems in children, more productive adults because they aren't chronically ill, etc.

Here in the U.S. some people would rather ridicule a medical condition than accept that it's a real problem.