In more general terms, i think if someone already had a bad reaction, be it to a vaccine or a booster, they should feel comfortable not to take the same risk yet again. They should be able to count on the fact that enough people are still getting vaccinated.
But here we are now. Vaccination numbers have fallen off a cliff. Which means that those of us, who are most at risk to experience a bad reaction, are almost in a bind to get one.
That's a huge bummer and another example of abandonment.