“Note that this is the probability of an infection being Omicron given a person is infected, so it doesn’t tell us how likely a person is to test positive in the first place. This means it doesn’t tell us that the vaccines are making things worse overall, only that they are making it much more likely that a vaccinated person is infected with Omicron than another variant. In other words, it is a measure of how well Omicron evades the vaccines compared to Delta.”
Not so shocking when you read the actual article.