Among the impacts of suspension of such science grants is the impact on PhD students. The PhD students themselves would do fine - they would just leave science and go to programming, finance, etc. - and most will that way do financially even better than staying in science. The issue here is the future of the science - for the precedent one can look at the Russian science today as similar thing - leaving science for better pastures en masse - happened there in the 90ies.
China is producing 77K STEM PhDs in 2025 and that number is quickly growing year over year, US - 42K/year. (and just ponder for a moment that those 77K are the smartest out of 1.5B population of a country where STEM is all the rage - those 77K are really top line smart and driven ones with all the support from the state)