Its no point being concerned about the vaccine unknown compared to what is known on Covid which is telling us that those infected by Covid and don't die from it may experience ongoing adverse effects after being tested negative for Covid.
That may be your personal opinion, but on what basis should everyone agree with you?
Many people may have - perfectly reasonable and legitimate concerns - about the potential long-term impacts of Covid vaccines.
I happen to not share those concerns, but I acknowledge those concerns as being very real to a great many people.