I don’t think it’s surprising. There’s been a long history of East Asian migration to Latin America.
I have an entire branch of extended Chinese family from Panama and Cuba.
Last time it was the Chinese exclusion act that prevented Chinese people from entering the U.S., this generation it’s the new and recent immigration restrictions which have pretty much enforced similar restrictions at the southern border.
With the no of people leaving China right now I do think we will see more Chinese restaurants in places like smaller Mexican cities.