That isn't true. Just from this paper https://pmc.ncbi.nlm.nih.gov/articles/PMC9115089 ... COVID-19 killed roughly five to seven times more hospitalized older adults than influenza.
Anecdotal, my uncle, several friends' relatives died from COVID during those lockdowns. I don't know / heard anyone died because of flu (in my extended circle of people I know)
All of that happened, but it went right over a lot of people's heads, and nobody talks about it anymore because it became such a sore and divisive topic and we're all glad it's over.
I remember well the video showing a whole column of military trucks transporting bodies out of the city of Bergamo, Italy, on March 19th, 2020. I took a screenshot because the magnitude of what this meant gave me shivers. It was one of those moments when the world seemed to stop for a minute and was changed forever like on 9/11, to me at least.
Ever since, I can't find much common ground for discussion with people claiming it was just a flu. You either acknowledge the difference or you don't.
But at hospitals? I'm sure you can point out a few specific times and locations but on the whole, they simply were not overwhelmed with Covid deaths to the point where anything like "morgue trucks" were needed.