From a Times article on the Times' article: "Trump initially called the Times [tax return] article 'totally fake news' on Sunday, and then shifted to falsely accusing the paper of basing the report on illegally obtained information about his finances."
This is possibly the most asinine — and therefore more commonly used by Trump — logical fallacy in the argumentation playbook: Dear reader, viewer, or voter, what you just learned as fact means nothing since it came to you illegally.
It didn't, of course, but that's another argument. Backed up by hours of propagandistic gibberish about dark liberal forces from Hannity, Ingraham, Limbaugh & Co., Trump's base falls for the fallacy every time. That, or the base uses the Trump-dispensed fallacy to also disingenuously distract from the non-availability of a logical defense.
It would make no difference if the Times' material came from Satan himself. We need only know if the material is valid. Which it is. End of story.