The two groups(Those opposed to vaccination due to potential long term effects and those in favor of vaccination immediately) cannot come to a meeting of the minds. Both sides see a potential existential threat that they're prioritizing that makes them diametrically opposed to the other point of view ("if you don't get the vaccine today you're actively spreading the plague" vs "if I get the shot, my blood will clot and I'll be sterile"). The truth is somewhere in the middle.

The whole issue with vaccination is that of threat perception. Everyone is building hypothetical models for the future based, mostly, on personal feeling and enough data points from experts to justify that feeling.

Again: There are a number of people who feel that the threat of the virus is less than the threat of the vaccine and are thus using whatever means presently available to them to justify to others why they believe that, just as there are people who feel that the virus is a greater threat than the cure.