I just mean that philosophers have a bad track record asserting that they are using the same definition as each other. That's rather worse than just not using the same definition. I told Jack that he wasn't using the same definition as the Stanford Encyclopedia. I didn't expect him to believe me, but he didn't even notice. Does that count for your purpose, since he chose the source?

But, yes, I do condemn argument by definition because I don't trust the individuals to have definitions.