Without clear evidence pointing to such things, it is not appropriate to blame them. That's what they do in life. This is a coronavirus similar to SARS and that was never blamed on being a bio weapon. At least not by any official statements. As convenient and coincidental as some things often are, they are simply coincidence. It may be convenient for the US to have internal turmoil in China and a distraction, but even a purposefully designed bio weapon like this can spread all over the world. It may not be an Ebola level scare but it can severely distract all governments not just China's.