I agree. Democrats would have won the election had they nominated Bernie Sanders or Joe Biden. All they had to do was nominate someone who actually had actual appeal to midwestern working class white voters.
In other words, a man. You're sadly right.
That being said, the states that put him over were so, so close. She maybe could have pulled it out without Comey, but obviously the closeness would have been a real shocker/reality check. It's too bad we had to jump off the cliff to get that reality check, though, because I think she could have recalibrated after a decently successful first term.