The fact that you don't understand why the flu vaccine was only partially effective last year, or in any year, and you are in the healthcare industry is an indictment of your intellect.You know this but I will beat on the dead horse for fun.
Seasonal Flu Vaccines | CDC.
How effective is the influenza vaccine? CDC Seasonal Flu Vaccine Effectiveness Studies | CDC It was 40% to 50% effective last year.
Covid vaccine effectiveness: https://www.nejm.org/doi/full/10.1056/nejmoa2108891
88% against delta.
In summation: 88% > 40% or 50%.
Agree that it's here to stay. The Epidemiologist said that it's chronic until it becomes seasonal and then it will migrate to endemic.