Note that this happened because people failed to get recommended boosters, so fully vaccinated people are still far less likely to die and in the minority of deaths.

Per the article:

"Being unvaccinated is still a major risk factor for dying from covid-19. But efficacy wanes over time, and an analysis out last week from the Centers for Disease Control and Prevention highlights the need to get regular booster shots to keep one’s risk of death from the coronavirus low, especially for the elderly."