My parents raised me with the mantra “life isn’t fair” and while trite, it’s even truer today than it was all those years ago.
The vaccine has been available for anyone who wants to get it for the better part of a year now, boosters have been released, and it's effective at preventing both transmission and severe cases (to include death).
If your relative is vaccinated, the odds of them getting severely sick from an unvaccinated person are incredibly small, and as such, various gathering restrictions are not only ineffective, but straight-up immoral.
(if your relatives aren't vaccinated, then they've made a choice to increase their risk exposure, and that's on them - given the effectiveness of the vaccine, it's pretty clear that safety is a personal choice, not something that other people impose on you - which is reinforced by both of the links you posted, wherein unvaccinated people died from the virus, not vaccinated ones)
I would think that not having a high school graduation / prom /recital /wedding etc to be a lot less ruinous than having a close relative die from one of these?
I agree with you: life is too short. Personally I would hate for it to be cut even shorter because all the hospital beds are taken up by people who contracted an avoidable, extremely infectious disease.
https://people.com/health/college-student-dies-from-covid-af...
https://www.newsweek.com/bride-planning-funeral-instead-wedd...