I don’t think this would be an overnight phenomenon, but money talks and I could simply envision China spending buckets to give themselves an opportunity to gain an advantage they didn’t previously have. If the US commits to what the Trump Admin is attempting on trade, migration and science, why wouldn’t they strongly consider a push to fill the vacuum left?
As for what that would mean about those who took China at their word, we *are* talking about Academics here, simultaneously being a bunch of the most gullible idiots ever is like their whole shtick.