It is obviously a cycle we need to break. That said, a campaign has to make choices that lead to victory. Kamala is already a person of color and a woman. If she wins, it would be only the second time to have a non-white President and the first woman.
The fact is that while many us are hungry for change to the old norms, many will be more conservative to change (and I don’t mean in the crazy MAGA way). Having an old white guy on the ticket acts as an anchor for those who are too scared to fully jump into all out change, ensuring that those votes aren’t lost to the other side.