Yes. That is called doing science.
> If genetic variations really are the reason for these variations and some people are indeed measurably harmed by these compounds then it would be a very interesting and somewhat alarming result, but that's not what the study says or what we can conclude from it.
What would make me not think that? Maybe we should investigate it. That is also called science. Saying anything is noise only disregards the response of that part of the sample as useless. It is not useless.
It is why some of us are more sensitive to to certain diets: https://www.chop.edu/conditions-diseases/carbohydrate-malabs...