That's true, though the model I linked accounts for that wide variation from the difficulty to project. The key from that model (and others) is the trajectory. The trajectory and rate of change is what will dictate beginning and end of current travel/gathering restrictions.
The second article also provides context on what the next steps here should be and why a "second wave' does not have to be in the same form that we see right now. Much of the conditions we're living in now are not the result of the virus but our country's lack of response to it in the weeks/months leading up to the middle of March. Mass testing, accurate contact tracing, improved treatments, and increased overall immunity are key factors moving forward.
Interesting (and factual) story from ABC News quoted by Breitbart News.
Over 3.4 Million Poured into the U.S. as Coronavirus Outbreak Began
China identified its first case on November 17 but hid it from the world until December 31. We got our first case January 21 and on February 1, when we had a total of 12 confirmed cases, President Trump imposed the ban on travel to the USA by those, other than US citizens, who had traveled to China in the previous 14 days. Taking that action caused a huge uproar because it disrupted peoples' plans but it was the right move. The same thing happened a few days later when he imposed the ban on Europe.
All told, in the months of December, January and February (not sure why the last two weeks of November were omitted) there were over 759,000 travelers to the USA from China, a number that includes about 228,000 Americans returning home. All told there were 3.4 million travelers to the USA in those months, including hundreds of thousands from Italy and other countries that were heavily impacted by the virus.
The real problem was China which, for whatever reason, chose to not tell the world about the virus for 6 weeks, then denied access to early samples when we offered assistance, then threw reporters from the NY Time, Washington Post and Wall Street Journal out of the country. Those are all signs they did not want the world to know the full truth about what occurred there and the world is suffering dramatically because of their failures.