Yes, the information he displays is not very different from what known agents of Moscow put forward, or what occurs in Moscow controlled media, believe it or not. Jones is not incredibly original.
And do American leftist groups need any help from Putin?
Read books like "I lived Four Lives: Communist, Citizen, Counterspy," and you'll see that soviet involvement in "leftist groups" has always been very heavy, and is still ongoing.
And is Putin promoting "communism" or Russian revivalism, Russian nationalism? It seems to me to be the latter.
There is a different between nationalism and patriotism, the latter being what we have in the United States. The former being the cause between, say, Russian soldiers burning an American flag and saying "We are coming for you!". (There was a video like that during the Georgian war.) Nationalism in Russia is more of the cult of personality method, more Naziish, and everything is controlled by the state, even the other parties; and, I will add, voter participation in Russia is notoriously low, and Putin's rate of winning, and the manner behind it, is notoriously fraudulent.