Not to mention humans have lived with the cold and flu circulating around the world for a very, very long time.
Covid19 is new, nobody has any built up resistance to it.
Also, it is still very early days with this new virus. There is a great deal we still don't know about it and it's lasting effects. There is talk of permanent lung damage, there is talk of cases where people thought recovered got sick again, and even died.
Describing any new virus as no big deal just because more people die from something else is ludicrous reasoning.
I'm not a doomsayer, but I am a realist. The government will take the steps it thinks will reduce the virus spread, and that will include banning public gatherings, sporting events etc.
accounting for about the same age related mortality percentages as the flu.
https://www.cdc.gov/flu/spotlights/2018-2019/hopitalization-rates-older.html
I don't see any mention of mortality rate of influenza for those age brackets though.