This might have cost 4-6 weeks. Chinese leadership does not get off the hook - they are scumbags.
WHO leadership denies it, BTW. And I don’t know (outside of nonsense “plandemic”-style conspiracy theories) the WHO would have gotten out of a cover up or delay.
But according to multiple reports US intel agencies were giving good info to Trump at around this time but he fucking ignored them.
So no one should let China off the hook. And no one should let Trump off the hook.