I have no real problems with imagining that omicron's IFR is around that, it's a reasonable number. I just have severe problems with the way you reached it, it's pure coincidence that you reached something likely in the right order of magnitude.

Your article is in the opinion section, not written by any sort of doctor but some sort sort of investor (and incidentally substantial republican donor), that's not a source I would take seriously... Author's wikipedia page: https://en.wikipedia.org/wiki/Robert_D._Arnott