I think the major difference between even just Influenza and Covid is, that Covid continues to have a greater disease burden than influenza and a higher percentage of people with post-acute sequela of different forms and is less restricted to the winter months, having roughly two waves per year.

All together, why should we not implement strategies to reduce these numbers of deaths and disabilities? Especially if they would, in the case of better air filtration and ventilation also help tackle future occurances of airborne pathogens.