it's all about funding. for every 1 person nervous about intellectual safety in the US, there are 50–100 waiting to fill that spot, if not 1,000–10,000. Funding has been cut in academia, and less positions are available as a result. No country is remarkably filling this gap, aside from a hilariously few more availabilities and some more graduate student positions (who operate as the scientific labor in Europe and other countries, before graduating and having to come to the US for job opportunity).

As others have pointed out, presumably the outcome is that higher value scientists are favored, and higher impact research is demanded. When industry demands certain research, the funding appears because private entities will fund those positions and those grants. The widespread funding of all avenues of science is a great feature of American intellectual culture and hopefully it doesn't vanish. But it was a remarkably uneconomical arrangement and a total aberration of history, so I wouldn't hold my breath about it sticking around through the tides of history, it was more of a fluke, and many in academia wishing to regenerate that fluke are a bit delusional and a bit tied to the idea of a golden era like the boomers dreaming of the 1950s suburbs. A great deal of research is important science, but totally worthless for the foreseeable future on an economic basis. We might not yet conceive of why this research does have economic value, but it's so abstracted that as it stands, the value isn't tangible and it's thus impossible to defend reasonably.

Scientific freedom doesn't mean the freedom to expect a subsidized career on the basis of non-lucrative research. It's more of a privilege to have such a lifestyle that is downstream of a wealthy empire. Since America is going bankrupt, the dollar-reaper is coming for the superfluous. So, there goes your funding for conure breeding or the health benefits of community gardens and expect more stability if you're researching crop diseases or livestock vector research.