If someone tests negative, logically, they do not need to stay locked in a room for a week. Further, they would have tested negative prior to the flight as well, which means people would be quarantined after not one, but two negative tests. And for what, exactly?

That’s really the cardinal question here. Is the idea that such measures are going to put even the slightest dent in the community spread of current and future variants? Because if that’s the assumption, it’s a really bad one with no evidentiary backing. If we’ve learned anything over the last year, it’s that stopping the spread of COVID-19 is essentially impossible.

For example, Florida and Michigan have had wildly different COVID mitigation measures in place, yet both states saw big Delta variant spikes based on what is clearly a seasonal pattern. You certainly aren’t going to reduce spread by making the lives of international travelers, including US citizens, absolute hell for no reason. That’s especially true given spread on airliners continues to be largely non-existent due to the filtration systems in place.