As for the other content, it just shows you don't understand what kind of problems an insufficiently tested vaccine could cause. You should educate yourself better:
https://www.sciencemag.org/news/2019/04/dengue-vaccine-fiasc...
Of course no one wants to take a vaccine that didn't undergo proper clinical trials. The argument was whether a vaccine that had typical side effect ratios would be ethical.
I don't think we disagree about the new vaccine risk level, since we don't have a vaccine, nor know anything about its side effects.
If a vaccine is has differing risks based on age group, then I would hope that we vaccinate the lowest risk group; assuming the risk variance is significant.
As a society, vaccinations are naturally government infringement upon individual rights. But a well-functioning society routinely infringes on individual rights. We place children in protective services when their parents don't care for them properly (in the mind of the government). We (in extreme times) invoke a draft for military personnel. As my dad used to say, your right to swing your fist stops at my nose. Rights are not inviolable; though care should be taken to limit infringement.
As SC Justice Robert Jackson once said, the protections afforded by the Constitution "must not be discredited by an interpretation to mean liberty without law."
I don't feel that you answered my questions directly, but if I understand correctly, it appears that you would hypothetically favor compulsory vaccination of children for the greater good, even if the personal risk outweighs the benefit.
I wholeheartedly disagree, as I do with the draft. Similarly, I 'think the right not to be punched, is analogous to forcing someone else to vaccinate for your benefit.
As a society, we get to decide what impositions we impose on individual liberty. Where would you draw this line?
I draw the line at criminal charges for failure to vaccinate.
And as far as COVID vaccinations go, you're trying to have your cake and eat it. Either COVID-19 isn't risky/dangerous for young people, (meaning we can safely vaccinate them), or it's dangerous to them. If you're trying to say that a vaccine for COVID-19 would have worse effects than the disease itself, I think this would be extremely unlikely, since it doesn't occur with other vaccines.
If a COVID vaccination has a 1 in 100K rate of deleterious side effects (up to and including COVID-19) in the general population, then vaccinating the US population (330M) would result in 3300 cases of COVID (or bad side effects). The benefit of this would be saving roughly 2M people from death, and countless others from hospitalization and long term complications.