Because people would have rather had those fixes and stayed with their party and not had the explosive figure of DT.
The democrats were SO BAD that many people couldn't stand the extreme leftists policies that even DT was worth voting for.
If they had gone more moderate, ditched both Biden and Kamala, we would have a president Newsom right now. Also, as it turns out, Newsom's teen son is a huge Charlie Kirk fan - which has been influencing Newsom.