Not my opinion but Il play the other card, for the purpose of debate.
China did this to themselves, intentionally. What better way to elevate your economy than to release pathogen which will breeze over the healthy, yet kill sick and old people. Minimising/removing welfare and health costs and leaving behind an entire working populous. What a way to beat the tariffs...wanna bet the cure comes from china too?
FWIW I despise conspiracy theories, they are based in fear and ignorance, all are entitled to their own thoughts though!
As I said this is not my opinion, but we live in a world where all things must be considered, even the things which at times seem impossible are more often than not, just improbable.