No, the bullshit part is that you believe that, probably, most of the Chinese travellers past January were unaware of the seriousness of the Corona virus. News of deadly threats travels like the wind, government suppression or not. People travel within their own countries, talk to neighbors, some of those neighbours are doctors, nurses, janitors, undertakers, party secretaries, drivers, cops and family of cops. They all have phones, they talk, they spread the news. There's no such thing as a state secret when a mass disaster happens. You cannot hide an event that involves hundreds of thousands of people.