This is the kind of thing that makes me question *most* of what is presented as "evidence" these days. Pretty much, any person who was born in Russia, or has friends in Russia, or who can be connected to any person in any level of the Russian government within 6 degrees of Kevin Bacon is now considered an "operative" or an "agent".
Whatsisname was paid to be on a show on a Russian TV channel. The channel is funded by the Russian government. Therefore, he took money from the Russian government! Is that how you would cast it if a foreign person was on a show on PBS and got paid for it?
You shouldn't have to dig so deep and engage in so much hyperbole. You've hypothetically got a rampant, far-reaching conspiracy involving large numbers of people, doing incredibly obvious things by all accounts. If it's so broad a conspiracy, it should be easy to find people willing to come clean about it. If it's so obvious and transparent, then solid evidence shouldn't take months of investigation.
That's where I end up being really skeptical. How much of this is genuine wrongdoings of a material nature... and how much is a witch hunt?