Influenza kills an average of 35,900 people in the US per year, not "50k-100k". But your point is not wrong. Activity has been low so far. However, flu season can peak as late as March based on previous years. The testing has been happening for flu; the tests are just negative because flu isn't prevalent anywhere at this point. Peoples' behavior has also changed massively, which will have an impact on a respiratory disease like Influenza.
I certainly wouldn't suggest shutting down businesses for the flu each year (nor for COVID-19 for that matter), but would I be upset if people wore masks in indoor public settings, kept their distance where possible, and stayed home when they felt sick during flu season? No. And doing so would have an impact on flu season every year.
Just guessing you might be a big supporter of mr anthony fauci perhaps.