Nonsense. Timothy Pickering was a close political ally of Hamilton, a leader of the Hamiltonian wing of the Federalist Party, and an avowed adherent to what we now know as Hamiltonian Federalism. There is nothing wrong with noting those simple facts.
Why else mention Hamilton in the context of something he detested?
Cause Timothy Pickering was a leading member of the Hamiltonian wing of the Federalist party. I'm sorry if you don't like that fact, but it is still a fact. So tough.