But apparently failed to mention a fair amount of Chinese traveled to Italy earlier in the year before the outbreak
Did you read the article?
It mentions one European country specifically -- Italy.
And it clearly states:
-There was a ban placed on foreign nationals who had been to China within a 2 week period on January 31
-The ban on European travelers came on March 11, which it states was weeks after Italy had gone on lockdown
The hole in that strategy was obviously between Jan. 31 and March 11, it had already been spreading around Italy, so Italian nationals and Americans in Italy who had never been to China...were coming to the US.
Thus, how the NYC spread heavily came from Europe.
The problem with the bans also included:
1. There was never a ban on Americans coming from either China or Italy/Europe. It banned the foreign nationals, but if you had a US visa or passport, you could still travel from those hot spots. Of course, we know that the virus doesn't identify by nationality, so it filtered the entry at best, but obviously didn't come close to stopping it.
2. There was and currently still is very little screening on airline passengers. A US citizen can still fly from Italy to the US today. And international or domestic passengers aren't being screened for temperature, told to self quarantine 14 days, etc.