GIGO, which in this context would translate to something like "using a bad dataset means there is a problem with the data, not that the tool is racist". I'm not an expert, but I think the argument here is it's far far too easy to have a "garbage" dataset with these tools. I.e. one that only functions correctly for some racial groups (like this one does). That's only racist if you then try to use it in a situation where it comes in contact with multiple racial groups - like, virtually anywhere in the real world.