I believe that the odds for Kamala are fair. Her political views are extreme and she is considered my many as "unelectable". Although odds for other democrat candidates such as Pete Buttigieg and Raphael Warnock are currently not that favorable, as the primaries near these candidates may gain enough traction to overtake Kamala. The current odds (7.50) looks reasonable for me. And these odds are for winning the 2024 POTUS elections and not for winning the Democrat primaries. Kamala, in case she wins the primary, has approximately 30% chance of becoming the POTUS. On the other hand, Buttigieg has a 70% chance, in case he wins the primaries.
We love to imagine USA as this improved and developed nation with high regard of freedom. But in reality, they are lacking that so much, they are a backwards nation, which means a female that is coloured would be pretty difficult to hit. Hell they preferred Trump over a women, although that woman was Hillary Cliton so I do not really blame them.
Long story short, Kamala would lose if she was the candidate, because she is a woman, and she is a person of colour, and it is greatly obvious that USA doesn't like that in bulk. Maybe it would be possible if she got the votes of millions of women who didn't voted, but that is a tough task and would require a lot of hard work on campaign.