Sure, Trump uses insults, but he’s equal opportunity in his insults. Hasn’t said anything really worse about certain women than certain men.
To bring the sexist angle in was bogus. Trump is known for having competent women high up in his organization, and working with them well.
It was more an issue of how Hillary would use Trump’s comments to string together into War on Women attack ads. They went after Romney with absolutely innocuous statements about women. Trump offers them a gold mine of ammunition.