That's why certain vaccines are NOT given to certain populations. That's precisely why JCVI declined to recommend, it was based on RISK vs benefit considerations.
Because we know. In an emergency, in a global pandemic, a recommendation AGAINST universal vaccination isn't taken lightly, and you seem to imply you know better than JCVI?
lol.
The benefit-to-risk ratio may well be quite low for particular vaccines with particular age groups. Again, that's not the same as saying particular vaccines are "harmful". By any reasonable definition all the vaccines we have are extremely safe, and for anyone with a typical chance of contracting COVID and having it develop into a serious illness, I can't see why you wouldn't choose any of them.