You don't know that.
It's impossible to say that an individual's suffering
with Covid 19 wouldn't have been been more
severe without vaccination.
Vaccine efficacy is a statistical thing.
Vaccines are a marvel of medicine.
www.sciencealert.com
Only your epidemiologist knows for sure (statistically).
Drunk driving analogy.....
I've known sober people who died in car accidents.
I know drunks who didn't die in car accidents.
Does this mean that driving drunk doesn't increase
the risk of deadly accidents?
Don't make me give you the smoking analogy.