Thank you for this interesting writeup.
Given the headline, I was a bit surprised that the article did not discuss kidnapping or cross-border human smuggling. Frankly, the Afghan practices described here seem tame compared to what’s been documented in the cocoa or shrimp industries.
It seems to me that the Chinese are mainly fast-following, for example via distillation. I doubt they could take the lead in capabilities, with or without a U.S. slowdown. Price is another matter of course.