That is an interesting theory, but it’s certainly not the consensus view, right? I don’t know if there is data they have they’re not presenting in that paper but at first glance it seems pretty speculative. And it has errors. Colombia is not in Central America, and Sichuan pepper is not a capsicum. It’s Zanthoxylum. The fact that you can find evidence people ate kimchi or used the word “pepper” before 1492 in Korea does not really tell you much, because the concept of “pepper” and “spice” existed across Eurasia before any Europeans found capsicums. The new fruit occupied existing linguistic territory and changed it.