I could argue the same about Bernie voters. He's a non-Democrat (and, one could argue, an anti-Democrat) who called for someone to primary a sitting President (and a damn good one at that), using the party only when it happens to be convenient for him. He has no foreign policy experience, is one-dimensional when it comes to domestic policy, and has only managed to stay in office over the years because he's won a handful of elections in a small, predominantly white state. A fairly large chunk of his supporters seem to believe that by voting him into office that he'll magically cancel all student loans and institute universal health care within a week of entering office, and that he'll figure out how to do it without a Congress that will be even more opposed to his policies than they were with Obama's. He wants to raise taxes on the middle class, and while I understand why he wants to do so and generally believe that his reasoning is at least somewhat sound, 'middle class tax hikes' = 'opponent winning in a landslide' every single time. His fans support him ceaselessly, but don't care in the slightest about any downticket race, even though those downticket candidates are the people who would eventually help to pass his policies.
Honestly, I'm sick and tired of the 'Hillary is just a neocon Republican' garbage. If you actually look at her policies, her legislative record, and her record as Secretary of State, you'll see that she's aligned 95% with Bernie, with the advantage that she actually knows what she's doing. I'll vote for Bernie in the general if somehow he manages to win, but he's totally out of his league.