There seem to have been lots of comparisons with flu. Listening to one of the question and answer slots on the news a couple of days ago the scientist was saying that this cannot be compared to flu or, if you want to use that as a comparison then the only flu it compares with is the Spanish flu.
Since December 2019, COVID-19 has killed more people in the U.S. than influenza has in the last five years. Influenza is a significant burden on the population, but COVID-19 has had a vastly larger effect.
Many more people are susceptible to COVID-19 because there is little preexisting immunity to the virus that causes it—SARS-CoV-2. Through vaccinations and previous infections, a portion of the population has some immunity to influenza, which helps limit the number of cases we see each year. There is a lot of similarity between how the two viruses are spread, but the number of susceptible people is really what allows SARS-CoV-2 to spread so easily. COVID-19 has a higher severe disease and mortality rate than influenza in all age groups, except perhaps children under the age of 12.
So it is not like flu and if you are going to say it is you should back up your statements.
You can, however, compare it to the Spanish Flu. That virus killed more than the First World War, likely even more than the Second World War and possibly even more than the two wars combined. It is believed that more people died of influenza in the single year of 1918 than in the four years of the Black Death from 1347 to 1351. Now that actually was a "flu" pandemic.
Thankfully we know more than we did then but, I would suggest, not enough to be complacent.