Just to clarify, omicron is mutating. That has been reported by all authorities I have read. If the Israeli death is omicron it needs to be looked at from the issue of co-morbidities as well as the arrival of a Level Three omicron virus that has mutated into a deadly strain that no immunity can oppress. The Israeli death could be the first of a deadly mutant strain.
If by chance a COVID variant becomes deadly, given how quickly it spreads and the transmission between countries, there is no reason to postpone a shutdown of the globe to end it before it gets started. The New Zealand model is the only one that applies, no exceptions.