The story makes two main points.
The first is that mRNA vaccines appear to have long lasting efficacy meaning booster shots may not be needed for a year or more.
The second is that mRNA vaccines are especially effective in providing very long term protection in those who have already survived an infection. Maybe even lifetime protection.
From the article . . . “The findings add to growing evidence that most people immunized with the mRNA vaccines may not need boosters, so long as the virus and its variants do not evolve much beyond their current forms — which is not guaranteed. People who recovered from Covid-19 before being vaccinated may not need boosters even if the virus does make a significant transformation.”
The article links to this study . . . https://www.nature.com/articles/s41586-021-03738-2
Bottom line is that EVERYBODY, even those who have survived an infection, will benefit significantly from the mRNA vaccines. There is no rational reason for healthy people to shun the vaccines. None.