Everybody dies eventually but the thing that "pushes" it is what's considered the cause of death. For instance, you may have high blood pressure and it may kill you ten years from now, but if instead you die today from Covid, it will properly be classified as a Covid death with high blood pressure as an underlying condition. Furthermore, many of the additional conditions listed under cause of death were not even pre-existing, but were actually caused by Covid itself.That's not true they are not using the underlying deadly conditions as the cause of death. It's the covid that pushes the death.
The strongest evidence that the Covid-classified deaths are really Covid deaths is that the all-cause excess-mortality numbers for this year are even higher than the officially Covid-classified deaths.
And as for being more than ten times deadlier than the flu, the same underlying-condition considerations apply to flu deaths, so the comparison is fair and legitimate.