Yes, but this is due to mere circumstance regarding the closeness of both elections. Following this reasoning, we could say that a higher percentage of Clinton voters than Sanders voters are attempting to commit murder. The argument could be taken even further by pointing out that the only reason vote-switching affected the results in the first place is because Clinton was such a weak candidate. It seems very disingenuous to lay the blame at the feet of Sanders when Clinton lost the election despite Sanders’ voters proving more loyal to the party than Clinton’s own base.
My main point is that the author is insinuating something negative about the character of Sanders’ base which is unwarranted according to the evidence.