I think that Trump has the right to blame China, in his previous speech in the U.N General Assembly even calling the Covid19 "China Virus". They are living in the first world country which gives them all the resources to stop and contain the virus themselves, however they chose not to take a prompt action to stop the said virus, instead focused on taking advantage on making profit through vaccines and other preventive materials to stop the virus. I believe this is planned all along by a greater group to achieve whatever they want by any means necessary, we're just the casualties here.