So are you meaning to imply that it’s racist to be vegan? Certainly like any other movement, veganism has a need for more intersectionality. And that outright nazi vegans exist is shitty. But to imply that the anomalous existence of a fringe nazi vegan community means that antispeciesism is in itself racist is completely false, and even misses the point of that very article you posted:
“White nationalist veganism can sound somewhat absurd, but it also shows how complex and deeply rooted this ideology is, and how it can appeal to a variety of different audiences. To combat these racist movements, we must understand them, including how they can incorporate beliefs we usually associate with liberal or leftist politics. The diversity of this movement should not be underestimated.”
Emphasis added. It is important not to allow bigots to hijack otherwise important movements for justice. If that’s something that matters to you, then you have even more reason to go vegan, because animal consumption is not only intrinsically racist, but it is demonstrably materially supporting the fascist institutions who are the largest threats to democracy.
Veganism without some kind of conceptual framework of speciesism is not veganism. Your assessment is backwards, not only is the concept of anti-speciesism not fascist; speciesism is foundational to racism, sexism, and ableism.