So they are saying the majority of the people who died would have died whether all adults were vaccinated or not.
Their claim is that from the point at which the vaccine was available, if everyone were vaccinated there would have been a further 72,324 deaths.
What was actually seen was 391,305 deaths. Thus - according to their claim - vaccines (and boosters, and boosters, and boosters) could have saved 318,981 lives. Most of the other deaths occurred before the vaccine was available.
I don't care enough about this particular study to dig deeper, but I tend to strongly doubt its usefulness or accuracy.
From the article:
All of this comes down to trust – whether the political leadership creates the climate of trust in the public health agencies' efforts, in the science, in the ability of the health care system to deliver," Tsai says. "To me, this is a map of trust."
This. Less than ideal vaccine acceptance has been caused by a continual failure of the public health system and their industry partners to establish and maintain trust based on their handling of this pandemic. If a more serious pandemic happens in the next generation I foresee a near total breakdown in any public health measures that are implemented.