Though in the Sydney outbreak there are now 6 in ICU and 2 on ventilators.1 or 2 may be from HQ as I have no info on the breakdown but it means the rate of serious covid is ~1.5-2% in this outbreak.
Not nice for anyone to be in ICU, however we did buy thousands of ventilators and convert many wards to "COVID Wards" (I know the one at Balmain hospital has never been used).