The whole problem is, it is still a Covid19 variant. From the beginning we have seen people like myself that had it like a bad flue or some even a mild flue, yet other (even young, seemingly healthy, like my 31 year old next door neighbor) go very critical very fast and there doesn't seem to be much predicting how an individual will react to it. Easy to say "pre-existing conditions", but half the people even on this board under 45 haven't seen a doctor in more than a year and half the people out there in the public don't think or know they have a pre-existing condition.
This Omicron is supposed to be less severe on average, but how would you like to find out you were one of the susceptible ones, when you thought you were one of the people that could beat it hand down, but you found out too late?