This is largely, perhaps entirely because of reporting over Christmas.
I think (though I'm not sure) that the age effect is much more marked with covid.
You need to be careful with definitions (IFR, CFR, and whether vaccination or prior infection is included).
I doubt there is sufficient evidence yet, given the highly dynamic nature of the outbreak, to make any accurate assessment of fatality rate. We can hope it's very low, given the lack of impact on ventilator use, or fear it's quite high given the SA excess deaths.
There were various claims early in COVID, including from very high profile researchers, that IFR was low. They all proved false.