My point is that air travel (along with vehicular) was highest during this thanksgiving despite Covid being the worse during this thanksgiving and people having a good understanding of the risk. This is also shown in your link.
If people are traveling at such numbers (again thanksgiving was highest at any point between now and last March) given what we know now, there’s no way they would follow a lockdown when the effect is unknown like a hypothetical lockdown being done last February.
There’s just no evidence that Americans would’ve obeyed a lockdown at the levels necessary to stop spread.
https://www.washingtonpost.com/travel/2020/11/27/flights-tsa...