Basically, they prefer straight, white, christian males. His research showed Americans would rather elect a black male, gay male, muslim male, or basically any male over a woman. It's really depressing
To be fair to the US voters, HC won the popular vote. More people voted for her than the straight, white, "Christian" (in the vaguest sense!) male. The quirks of the electoral college, which favours Republicans, shut her own, and will continue to shut out any Democrat who doesn't win by a landslide.
However, even with the electoral college setup, Biden is still favoured to win.
projects.fivethirtyeight.com/2020-election-forecast/
Biden is far from ideal, but he is bland enough to pull it off.
His handsiness is hardly likely to deter an electorate who happily voted for a man accused of rape by multiple women, including his first wife and a then13 year old child, who received so many threats when she attempted to bring it to court a few years ago that she was forced to drop the charges.
With all of this KNOWN BY THE PUBLIC, Trump STILL won. So I really don't think that Biden invading women's personal space is going to register as a reason not to vote for him.