Putting untested poison in your body is a pretty serious issue.
Obviously we have a small % of people who are VERY careful about what they consume.
But, most don't strike me as being worried about "personal health risks "
I don't know you and can't say if any of these examples apply to to you personally:
But, it always amuses me to hear hardcore bodybuilders echo THAT concern as a "walking pharmacy."
Then you have the obese crowd of "vax refusers" who smoke , drink booze and never exercise.
Then we have the college party animal, who respects their body too much to put a "vaccine poison " in it.

Later that night, they binge drink and take rec drugs by the handful.
Most of these folks refuse the vaccine to be in your face about making a "statement".