In a paper published in 2024, you find the highest estimate of relative hospitalized-fatality-rate (HFR) for Omicron variant compared to Wild-type COVID: 50%. But even assuming that Omicron truly was half as lethal as original COVID, it doesn’t explain the high death among those of middle age. Here is the death rate for those of age 33:
The mean death rate for the 16 years of 1999-2014 was 117.2 yearly deaths per 100,000. Though unlikely, under the liberal assumption that Omicron variant really was as much as half as lethal as original COVID, there is no way to explain the death rate of almost 200 per 100,000 shown in orange at top right (2022 death rate under Omicron).
That 2022 death rate was 25 standard deviations above the 1999-2014 mean rate.
Reference
[hospital death rate for Omicron compared to prior variants] — Hedberg P, Parczewski M, Serwin K, Marchetti G, Bai F, Ole Jensen BE, Pereira JPV, Drobniewski F, Reschreiter H, Naumovas D, Ceccherini-Silberstein F, Rubio Quintanares GH, Mwau M, Toscano C, König F, Pfeifer N, Zazzi M, Fanti I, Incardona F, Cozzi-Lepri A, Sönnerborg A, Nauclér P. In-hospital mortality during the wild-type, alpha, delta, and omicron SARS-CoV-2 waves: a multinational cohort study in the EuCARE project. Lancet Reg Health Eur. 2024 Feb 2;38:100855. doi: 10.1016/j.lanepe.2024.100855. PMID: 38476753; PMCID: PMC10928271. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10928271/
Gee, I can't possibly imagine why so many (jabbed?) would be dying. Although I have heard that Coincidental', 'Unrelated' and 'Sudden' caused an awful lot of death over the past few years... perhaps particularly in hospitals, although these 'Sudden' ones are scattered all over.