You would be immensely surprised as to the varying reasons and literature and science brought to bear as to why this statement is incorrect.
Longitudinal cross sectional studies, for one, comes to mind.
Never before used technology to innoculate the ENTIRE population at once, never having been used before also comes to mind.
That only scratches the surface for people objecting to being forced, does not get into nitty gritty details.
Those alone should be sufficient to not inject the entire human population on planet earth with an experimental unapproved medical treatment.
Avg death age in US from covid is 80. thats HIGHER than the life expectancy. I am not saying who cares about seniors, but, somehow we lost the thread that old people die, and that this happens and is normal.
edit
and that we shouldnt blow up the entire planet and inject everyone with experimental drugs just to save 10,000 over 80's