The conclusion based on flight statistics is misleading, as there were repatriation flights by governments around the world to evacuate their citizens from Wuhan after the airport was closed on 23 January. This continued until the end of March. Source: Evacuations related to the COVID-19 pandemic - WikipediaThis report from India presents Wuhan statistics on airline traffic levels How China locked down internally for COVID-19, but pushed foreign travel Airline travel stats plunged in Wuhan in February with the internal flight ban within China but the international flight ban only commenced in the last week of March, unfortunately allowing time for the pandemic to spread globally.
This is going to be a global public relations and foreign relations disaster for China. The obvious contrast between the ruthless internal ban on Wuhan's air travel and continuing international flights will feed conspiracy theories about waging biological warfare on the world and the more charitable belief that President Xi and his leadership made an incomprehensibly stupid decision to allow those flights. On the latter point, a leading Chinese businessman publicly denounced President Xi for stupidity and promptly disappeared,likely to prison.
Assuming the newspaper article is correct, President Trump has plenty of evidence for China bashing in the coming presidential election campaign. He is starting by raisng the possibility of compensation. Secretary of state Pompeo was denounced by the Chinese government for accusations about the potential origin of the Covid-19 virus in a Wuhan lab.