So before covid when the system was overrun were the fat/smokers/drinkers/skiers overrepresented in the hospitals, or were they there in equal proportion to people who choose to follow healthcare advice?

Regardless I think we agree insofar that we both aren't in favor of universal healthcare. It should be private insurance, where people pay at least in part based on their personal choices. If you made the choice to be overweight, or drink, play dangerous sports etc you should pay more than someone who takes very good care of themselves. Maybe then we could have double the ICU capacity, comparable to the Americans.

https://www.bloomberg.com/news/articles/2022-01-06/hospital-bed-shortage-shuts-down-canada-while-u-s-stays-open

But since the Canada Health Act is the law of the land, perhaps you can assist in parsing this section of the Act that was posted here yesterday:

"Universality

10 In order to satisfy the criterion respecting universality, the health care insurance plan of a province must entitle one hundred per cent of the insured persons of the province to the insured health services provided for by the plan on uniform terms and conditions."

https://laws-lois.justice.gc.ca/eng/acts/C-6/page-1.html?txthl=health+canada+act