Allowing Milchig (dairy) products that they certify to be labeled NON-DAIRY in big bold letters is a serious offense: “Lifnei Iver Lo Sitain Michshol” (It is forbidden to cause another Jew to sin)!
Someone may consume these during a Fleishig (meat) meal!
The fact that in smaller print they say OU-D or dairy is not a reliable solution.
In this and other matters, they cannot be impartial. I wonder how much revenue they would lose by refusing to certify these — nearly 1,000 (!!!) — products!