Probably the ludicrous notion that somehow Hillary Clinton is to blame for electing Donald Trump rather than the millions of people who voted for him despite overwhelming evidence of his lack of fitness for the office.
That's not what I gathered from the comment. It seemed like they were saying that Hillary had desired to run against Trump, according to those leaked emails. Is it false that Hillary wanted to run against Trump, back when many (including myself) didn't think he had a chance?
Millions of people also judged Hillary as being unfit for office. She was a horribly flawed candidate. (Not saying that Trump wasn't...)
So, yes, Hillary in fact does deserve some of the blame. She was probably the only candidate the Democrats could have run who would have lost to Trump.