Everything! Well, not really. See, the typical American likes catch phrases and to simplify complex things to just one simple to understand sentence. Which of course, everyone will interpret their own way.
Example: "They took our Jobs!" (when Steve Jobs died) or "Ladies and gentlemen, we got him" (when they tested positive for CoronaVirus) or even "Build the wall" (a renaissance of Pink Floyd's epic album).
It might sound like a joke, but honestly: because the media said "Corona" (the virus), sales of "Corona" (the beer) dropped.
Now, as for attribution to the President. True, it was not him per-se. But their academia is filled with interns (cheap student labour) that do the actual work, and do not feature in the paper, their mentors put their name on the results. So in this case by diverging a little amount of the money from defense to research... he contributed to the research, and without that money (and governmental policies to encourage this type of investigation) it would not have happened.
Of course, there's the maverick oddball
But think about it, it's even in our language. When a new dad says "I had a son!" (is that not unfair to the mother, that actually de-calcified herself to grow their child's bones?)
TL;DR: Governments encourage research by creating governmental policies and provide funding.