Huh, what definition of "racist" are you using here?

It's basically about putting a low value on the life on non-white civilians. In addition "I would do to foreigners, what Ann Coulter would do to them", is also a pretty straight way to signal racism.

I'm not sure what you mean by "racist", however is your claim supposed to be that this somehow implies that the conclusion is false/less likely?

I haven't argued that fact. I'm advocating for having a broad number of words which multidimensional meaning.

I see no reason to treat someone who makes wrong claims about race and who's personal beliefs cluster with racist beliefs in his nonscientific statements the same way as someone who just makes wrong statements about the boiling point of some new synthetic chemical.