“Jill Stein is a useful idiot for Russia. After parroting Kremlin talking points and being propped up by bad actors in 2016 she’s at it again,” DNC spokesman Matt Corridoni said in a statement to The Bulwark. “Jill Stein won’t become president, but her spoiler candidacy—that both the GOP and Putin have previously shown interest in—can help decide who wins. A vote for Stein is a vote for Trump.”
Yes agreed.
I think I know where you’re confused. Here’s the original claim that begat this thread,
The claim is about an opinion being generally accepted. To confirm or refute the claim requires secondary sources, since the claim is about opinions.
If the claim were simply,
Then the claim is concerned directly with what triggered the war in Ukraine. To confirm or refute the claim, you’d benefit more from primary sources (including journalism, as you mentioned.)