This Russian bot post is easily dismissed, and your initial instinct is to think that nobody could possible buy the claims therein – until you realize that it was re-tweeted by the wife of a Supreme Court justice! It demonstrates how eager people are to see confirmation of their beliefs.
(I believe that this is an aspect of human nature, and not a form of behavior specifically limited to the right wing. In my observations, the left is just as gullible. Case in point: the “we don’t tip terrorist” hoax.)