This claim should not be made lightly -- do you have any sources to back up your claim? I imagine the money spent on local and state fire departments does not subtract from the NPS/BLM budget for forest management.
Honestly, I would be glad to see some analysis and find that my uninformed impression is incorrect.
I also find it interesting that I'm being downvoted for raising such a fundamental question. As if the money is clearly being used in the right way.
More money for planes, firefighters, modeling fire behavior: https://www.gov.ca.gov/2020/07/09/ahead-of-peak-fire-season-...
https://lao.ca.gov/Publications/Report/4172
Although some discussion of prevention: https://www.npr.org/2020/06/07/867395353/california-was-set-...
I wouldn't be worried about the macro budget, look at your actual firefighting policies and decide from those if the money will end up spent well.
Whether or not a given crew is assigned to fuels or other fire prevention tasks in a given jurisdiction depends entirely on the budget priorities of that jurisdiction. In turn, that jurisdiction has to work with whatever annual budget trickles down from administrative and executive levels.
Regarding California, I know too little to speak with confidence on government spending. People I know who live there are work in land management have always said that forest (fire) management has been neglected for many years.