I don’t really know Caesar but your assumptions may well be close to correct. When they refer to a ventilator they are talking about mechanical ventilation which means the patient cannot breathe on their own and all those patients will be in an ICU. That’s different to what is called Non invasive ventilation which is a mask on oxygen for assisted breathing which is done outside ICUs as well as inside.
Whether all patients who are dying are doing so in an ICU and are ventilated I am not sure but I would suspect an assumption that most if not all are would be pretty close to the truth.
The really sick patients are also on what is called ECMO. It is extreme and only done in the hospitals in Melbourne who handle the most acutely sick patients.
Extracorporeal membrane oxygenation - Wikipedia
en.m.wikipedia.org
Lots of talk in the states from people with non-vaxxed relatives in ICUs and not looking good saying "pray he/she gets a ECMO" ... amazing they won't take a vaccine but are happy to go with one of the most extreme therapies possible. The line out of the groin area for example.