Being guilty of tax fraud has nothing to do with Trump. The two FBI agents interrogating Flynn said they didn't believe he lied about having been in contact with any Russian representatives and the forms filled out were modified from the originals, but he pleaded guilty anyway to avoid conflict. None of the people you listed were convicted of anything relating to collusion, not even Flynn because that was his job and the two FBI agents knew it. It's like saying someone was given a speeding ticket so that proves they stole something.
