Yeah, no one is safe from the virus, even if you are vaccinated twice, it's just a prevention but not 100% guaranteed. So it's a risk for this athlete to come at the Olympics, and I would say it's a dilemma, you train hard for this once in a lifetime event, to participate against the best. On the other hand, you are risking your life as well if you contacted the virus. So it's there choice to skip and wait for the next 4 years. Very difficult for athletes who might not make it to the next Olympics because of age.
For many of the athletes from developing nations such as India and Nigeria, the protocol means that they will qualify for the Pfizer vaccine which is otherwise not available in their countries. And ironically, this means that they have a better chance of survival, if they participate in the Olympics. For those athletes from the richer nations, I assume almost all of them are already vaccinated. Now if you ask me whether there are chances of contracting CoVID 19 despite the vaccination, then it is true that there is a small chance. But at this point, it is too small to be taken seriously.
