I don't understand the argument. Imagine flipping positions. You're saying that if an American researcher goes to China, gets employed by a Chinese university, and do research funded by China which is then commercialized by Chinese companies, the researcher is actually aiding America in expense of China.

I am genuinely unable to understand because even if the United States is descending into fascism or whatever, research is the last thing that an effective state wants to disrupt and scientists are one of the last groups that an effective state wants to alienate.

I'm not just referring to restrictions on collaborations with foreign researchers, although I frankly do not see how that meaningfully reduces the ability of opponents to benefit from US research unless we kill open publishing as well. I'm talking about the last year and a half of destroying the ability of every basic researcher I know to work in a stable and predictable environment.