It's just you. Confidence level is where it has been: Cautiously confident. This "dropping confidence" you believe you see on this board is just you misdiagnosing our angst that no matter how little sense it makes, this is going to be a close race. Maybe the closest in presidential history. That in itself is depressing, but that doesn't mean we're not confident she'll win in the end. We're just sad that a person like Trump is still going to get minimum 47% of the vote in this country, and we're going to have to sweat it out until the end.
For Kamala to win, she needs to offset a dip in black and hispanic votes by adding more white votes to her coalition. If the gains she's made with white women hold (+6%), it's going to more than offset the dip in black and hispanic votes. White women are the #1 voting bloc in the country.
One other thing: Kamala needs turnout from high-propensity voters to win. Trump's new gains have come from low-propensity male voters, people that don't normally turn out. His coalition is on a much less secure foundation than hers. As David Plough said, he's encouraged because early voting totals haven't shown a big wave of incel votes yet.