Basic information is lacking.
How many new cases are vaccinated?
How many new cases result in hospitalization?
How many new cases require a stay in ICU?
What is the current length of hospital stay with new cases?
https://www.cnet.com/health/medical/can-you-tell-which-covid-variant-you-have/
Bottom line, health “professionals” have little to go on when declaring a new infection is omicron. There is simply to little data and too much speculation to accurately state how many infections are omicron.