But Sars-cov-2 is different. It is without doubt in circulation and mutating. Less it mutates, less new versions it can make. Because COVID-19 vaccines limit replication and transmission, they also limit new variant emergence. Had this person that gave omicron to the world been vaccinated, omicron would have lost its change.
Now about omicron infecting more people who have gotten booster is completely wrong. Totally. It is just your anti-vaxxer mind messing with you. This is the way your dark mind functions - making things up.
Has it occurred to anybody that there really is nothing to see there? Can it for example be that delta and omicron are circulating in slightly different populations where omicron is more prevalent among vaccinated and delta among unvaccinated?
Or there could be some disparities in populations, for example young people not getting vaccinated but getting infected by delta instead of omicron not not getting infected because of some other measures like school antigen testing?
You can investigate this information https://covidtracker.fr/vaximpact/
It is mostly omicron in France by now.