We anticipate that the splitting criteria and other functionality introduced by MatFold will lower the bar for better and more automated CV of data-driven materials models. Practitioners will have a better understanding of their expected accuracy for materials discovery in increasingly difficult OOD inference, regardless of their modeling approach because MatFold CV splits are only material dependent and entirely model agnostic. This will also enable deeper insights of materials discovery performance spanning differing modeling approaches and data domains and, if widely adopted, provide more grounded evidence for which modeling approaches may be more appropriate in various materials discovery situations.