At the end of TFA is a link to the source study at https://www.science.org/doi/10.1126/science.adx5154

To be honest, the source study's graph of funding in particular makes me take this entire article with a giant grain of salt.

The line graph of funding over time looks to me like there's a huge drop-off of scientific funding during the stagflation era under Carter, followed by linearly-increasing funding until the 2008 financial crisis, whereby funding is again cut sharply, then returns to an upward trajectory. Any relation to which party had Congressional or White House control appears to be immaterial.