Bernie's support of Clinton is something that a non-trivial number of his supporters did not agree with him on, I include myself in that number. Regardless, droves of Bernie supporters showed up at the polls to vote for Clinton, at a rate greater than prior Obama voters.
Snopes isn't a news site, they are fact-checking site... which means their politicization should be less, and their need for full fair context should be greater, as compared to the likes of CNN.
You're effectively arguing that stripping context, denying readers salient details to the story, is magically making it more more factual.
Regardless of where my passion might be on this matter, I'm not wrong that cherry-picked framing and the removal of context gives the reader a significantly less accurate view.