At its highest efficacy levels (during the first strain) the vaccine provided no benefit for people under the age of 40 or so because for them the probability of contracting Corona and developing a serious case of Covid-19 was lower than experiencing debilitating side-effects from the vaccine. This was prooven conclusively by Pfizer's own studies.
And since it's now an accepted fact that the vaccines do not prevent spread sufficiently and efficacy is dropping, it is foolish to vaccinate anybody except the elderly and terminally ill. Mandating vaccines is madness and injecting children is utter insanity. If the medical community does not step up soon, the damage to the scientific community as a whole will be irreparable when the vaccine narrative inevitably collapses.