What's worse is that in most of these fields, you don't really even start working until after your PhD.
4 years is going to be a long time to underfund what's basically 4 entire classes of researchers coming out of Doctorate programs. It might take decades to recover our research programs.
Specifics of the current environment aside, welcome to academic life. Unless you are one of the exceptionally fortunate few to have a permanent fellowship of some sort (e.g. Howard Hughes), your primary job as a research professor is to raise funding.
During the doubling of the NIH budget under Clinton and Bush the younger times were great. After, budgets stagnated and things were harder but there was still funding out there. The disruption we're seeing now is a completely different animal: program officers are gone, fewer and less detailed summary statements go out, some programs are on hiatus (SBIR/STTR) and if you have something in the till it was wasted time, &c. NSF is a complete train wreck.
My startup had an STTR in for the last cycle and we can't talk to the program officer about our summary statement, nor can we resubmit, nor are we likely to be funded. That's a lot of lost time and money for a startup that, since we're atoms and not bits, is funded on a shoestring budget. The only time something like this happened in my memory was the shutdown in 2013 and that wasn't even close to the disruption we're seeing now.
But again, I explicitly said that my point was independent of recent changes in funding. I am no longer in science, but it seems to be true that funding has declined. That doesn’t mean that chasing grants is something unprecedented for scientists to be doing.