Did you say all economists have said that Democrats fix Republican messes? That is simply untrue. Academia, where many economists work, are notoriously leftist to a fault. They are great at theory, but not so good in reality. Political ideology influences their "expertise". It is a shame, but it is happening in science as well. It shouldn't, but it does. Facts take a back seat to their ideology. I blame education indoctrination which has been at play for quite some time in our country courtesy of our enemies slow playing us. I know you won't understand, but at least try to put 2 and 2 together.
Economists Aren’t As Nonpartisan As We Think
Now, couple that with the fact that there are 4.5 Democrat economist for every 1 Republican in academia and maybe you can see the problem. They aren't Democrats because of their economic beliefs as evidenced by the overwhelming number of Democrats in other fields of non-political academics. This study is from 2017. Given the direction of education, I would expect these numbers to be higher now.
https://www.natcom.org/sites/default/files/publications/NCA_C-Brief_2017_March.pdf
Bush Republicans are Democrat light. I don't care what they say.