I don’t dismiss the premise of the article and I think it is a shame how these organizations are being impacted, but I don’t know that these are the best exemplars of cutting edge science being shut down that will lead to America’s downfall from its scientific perch.
The world of privately funded research organizations like Bell Labs is long gone, with companies being barely able to look past the next quarter never mind being willing to invest in long term research that may not pay off for a few decades, if it pays off at all. And by definition most cutting edge science has that kind of financial time horizon. If there was an obvious, short term path to directly benefiting those conducting it, it's probably not very cutting edge at all and closer to engineering than actual scientific research. Not that there is anything wrong with that, we need engineering investment too. But it's not a replacement for science research.
I think a lot of people who scoff at the idea of government being on the cutting edge of science research don't understand how that research is being conducted. Sure, some of it is done by actual government employees, but especially for organizations like the NSF, the bulk of the research is being done by organizations and individuals outside of government who are simply given a check to look into things that might not immediately pay off or which have major societal benefit but no real path to commercial payoff.
They are, but the article asserts, without evidence, that the US, like Nazi Germany, has passed a threshold where it is going to lose its preeminence in scientific research.