I did say the likeliest explanation is no government involvement, but that USA involvement is still likelier than China‘s involvement given recent pattern of conduct.
Chinese exfiltration is also a conspiracy theory. In fact chinese exfiltration requires a larger conspiracy than USA disappearance. If you want to apply Occam’s Razor (which you shouldn’t), you should actually favor disappearance over exfiltration (but really you should favor no government involvement).
> There is a long series of scientists in the US that were secretly working for the Chinese government.
If that is so, can you provide me with a list. That list would actually have to be pretty long to make exfiltration the likeliest hypothesis. Like there would have to be more than a couple of dozen cases this century.
EDIT: I did quick googling to find any sources which backs your claim. This NY Post article is the strongest one (https://nypost.com/2025/02/20/us-news/us-science-labs-face-g...) it is basically a propaganda piece citing far right US politicians who claim extraordinary numbers (like 8000 scientists) without any evidence. As we know extraordinary claims require extraordinary evidence.