My issue is the conceptual mistake of ignoring the "unknown unknown" risks you impart on others when you accept one set of "unknown unknowns" yourself. It is a sort of hypocrisy that allows you to dodge the shame of a private decision.
In the end, when rejecting this vaccine, you have to fully own the "shameful aspect":
Taking the vaccine is an act many are taking on behalf of others, and in doing so, accept a private risk for a public good. We ought rightly praise this.
Rejecting the vaccine is a rejection of the priority of this public good which many ought regard as shameful.
Personally, were I so inclined to reject it, I'd simply say: "I do not care about society so much" -- and it would be true -- "shame me all you like, who cares". But the latent hypocrisy here and doublethink makes me believe many are unwilling to say this -- because they dont believe it -- and hence my issue.
which is fine, i think this is a valid position to take.
The invalid position is to prevent others from isolating you (who have this position) - for example, by mandating a vaccine passport for certain types of services or activities. You cannot take the position of wanting to protect yourself from u-u risk of vaccines, _and yet_ also continue consequence free life.