Real science is never settled, and anyone who has certainty on such things is not qualified to discuss it.
Omicron looks to be incredibly infectious.
2021-12-14 or so
The closed event was held in a separate room (ca 145 m2) in a restaurant in Oslo from 18:00 to 22:30, after which the venue was opened to the public from 22:30 to 03:00. A pre-party had been arranged for the Christmas party attendees at a separate venue, after which they were transported by private buses to the restaurant. Although there were no restrictions in place for events at the time in Norway, all attendees of the party were reported to be fully vaccinated and had been asked by the organiser to perform a rapid antigen self-test...
...Of the 111 respondents, 66 (59%) were confirmed cases (26 based on WGS and 40 based on PCR VOC screening) and 15 (14%) were probable cases (PCR-positive only). One PCR-positive attendee was confirmed to be infected with SARS-CoV-2 Delta variant (Pango lineage B.1.617.2), and subsequently excluded from further analysis. The total attack rate for the Omicron variant was 74% (81/110) (Figure). The cases had an average age of 38 years (SD: 8.6; median 36, range: 26–61) and 35 (43%) were women. The remaining 29 attendees did not have a positive PCR result by 13 December 2021.
... Most of the cases (n = 79; 98%) and non-cases (n = 27; 93%) were fully vaccinated with a median time since receiving the last vaccine dose...
In addition, during the investigation and as at 13 December, we detected nearly 70 other guests that were likely infected at the venue, and the Omicron variant was detected in 53 of these through PCR variant screening or sequencing.
WIND: the “news” tells us that highly infectious Omicron is a looming terror. But in truth it might be the best news in two years, if Omicron is as mild as it has looked so far. Because Omicron could give you very mild COVID and long-lasting and far superior natural immunity. A few weeks should clarify the situation.
We also see the pathetically poor efficacy of the vaccines, in terms of preventing infection. But has to weighed against any benefits eg reduced severity. And maybe that is the best result of all—strong natural immunity from Omicron, made even milder by vaccine “prep” for the body?