Each year seasonal flu reappears from it's source host: us. It doesn't start from zero infections. It starts from whatever number of hosts got it last flu season.
The CDC also estimates the R0 of seasonal flu at ~1.5 or lower. It also estimates the CFR of seasonal flu at ~.1%, 1/10 of 1 percent. It recommends no quarantines, social distancing is suggested, but not enforced. In other words, it doesn't take seasonal flu even marginally as seriously as SARS2.
In this last flu season, the CDC, as it always does, was sent samples from hundreds of thousands of people diagnosed with the flu. It reported that of those samples 16% of them were actually seasonal flu.
This means that 84% of the samples it received were other pathogens, and not the flu at all. Respiratory Syncitial Virus, and other influenza like illnesses actually account for the majority of cases of what people call the flu.
The implication you're trying to make is insuperable, because you're comparing a pandemic with orders of magnitude higher infectiousness and mortality rates to the common cold, among other seasonal illnesses, of which the flu itself actually comprises less than 20% of the illnesses annually.
Again, links to the actual research papers are on my blog, where you can read them yourself, but here's this.
