Uh… Okay. You asked how someone could possibly argue that it isn’t racist, and I provided a path for that.

I didn’t say nor mean to imply that the more colloquial definitions are wrong. I was saying that if you are considering racism to be about oppression along racial lines, then a white guy being given mold sauce isn’t it. The “if” there is doing a lot of work.

The more commonly used sense of the word “racism” checks out here.