I don't know if it's that femaleness amplifies and balloons (both real and perceived) negative traits all out-of-proportion to how they "should" be viewed ... or that femaleness gives a sort of gloss to behaviors and traits that would otherwise be perceived worse
Both, depending on the traits in question. There's that bossy/bitchy example, where assertive women were seen as domineering vs assertive men seen as confident leaders, but there's also opposite examples of care in a woman seen as weakness in a man, and so on; as well as the effect you mention where certain behaviours are more excusable in women, partly because women are deemed less threatening or capable of carrying out harm. It's ultimately still steeped in misogyny - 'feminine' traits in men make them less-than, while women who act in ways deemed masculine are seen as not knowing their place, and the idea that a woman could be dangerous seems silly because women are delicate flowers.
I get the feeling that conservatives might perceive female!Trump as a stereotypical SJW - angry, loud, emotional, shouting at rational men - but there's also the chance it might be positively perceived as brash honesty or standing up to smug intellectuals.
A lot of the support for Trump comes from the impression that he's sticking up for the vulnerable and voiceless and speaking truth to power, except that the 'vulnerable' and 'powerful' in question are framed as white men struggling against the oppression of feminazis. But with the genders swapped, we now have a fiesty woman refusing to let the patriarchy shut her up, and that alone provokes a positive emotional reaction in most liberals even if half the things she says are lies. My volume wasn't on that high so I didn't catch most of the words, but just from the video alone, there was something instinctively satisfying and feminist about female!Trump shouting at male!Clinton.