What's the correct level of STEM PhD employment in the government? Maybe those levels were way too high. But on a different note, we can't tell from the article what normal fluctuations look like. It only shows 2024 as the baseline, but ideally we'd look at a larger window than that as well as look at the percentage rather than nominal figures.
I think you're saying "how do we know this isn't the normal amount of Phd people who leave every year/administration
While we don't have PhD numbers the Trump administration fired a large amount of people so no matter some portion of those had Phds therefore it must be higher than the previous administration
"Science’s analysis found that reductions in force, or RIFs, accounted for relatively few departures in 2025. Only at the Centers for Disease Control and Prevention, where 16% of the 519 STEM Ph.D.s who left last year got pink RIF slips, did the percentage exceed 6%, and some agencies reported no STEM Ph.D. RIFs in 2025."