With results like that, why not risk debilitating or even life threatening risks??

They are calculating the risk of getting COVID-19 during a limited time window, based on a particular prevalence during that time. it is mostly risk of exposure.
Eventually, most everyone will be exposed to COVID-19.
This month for example, the risk is rising.
What is consistent however, is the strong protection that the vaccines provide, when you are in fact exposed to the virus. Vaccine protection from death from the virus, is approaching 100%.
That is why more than 99% of those now dying of COVID-19 in the USA are unvaccinated, even though the unvaccinated are a minority of adults.
Thosee numbers are too high.
It’s 99.97% chance of survival without the mRNA gene therapy.
They admit you can still get Covid after taking the jab.
So it increases your chance of survival by .01 to .02 at best or from 99.97% to 99.98% or 99.99%.