“The NO position argues that the concept of UPF is poorly defined; gives rise to misclassification of foods; is without clear mechanisms of action; and that the observed associations with obesity are likely confounded.“

Is my point. There’s a lot of correlation but whole classification system is poorly designed and mechanisms are not really explained. The whole idea of labelling foods as ultra processed as a proxy for bad seems poorly conceived. If I was to go further I’d say it has a whiff of naturalistic fallacy about it.