Hospitals overwhelmed aren't "what-if" scenarios. Its already happened around the world, and is now happening in Utah, where plans are in place to ration care, and give preference to young people over old people, because so many are sick with Covid.
Just because these things haven't happened in Canada yet doesn't mean they couldn't.
Do you even know who the "vulnerable" are? Its not just old people; its people with diabetes, heart disease, cancer, or cancer survivors, COPD, overweight/obese, liver disease, kidney disease, hypothyroidism, transplant patients - the list could go on and on. We can't take 20% or 30% or 50% of the population and separate them from everybody else, thats just dumb.
And its not just having a lack of beds to put sick people-its medical staff to take care of them. Medical staff also get sick and die; some will burn out. In places where hospitals were overwhelmed, they spent months away from their family because they didn't want to put kids, spouses, parents at risk.
Also, a few months ago you were crying about old people in care homes not being able to see families - how terrible that was. Now, suddenly, its your solution. What has changed?
Reducing, as much as possible, the spread of this virus is the most sensible course of action. Our shut-down earlier this year, soft as it was, saved lives. Authorities everywhere want to avoid another shutdown, hard or soft, and are attempting to slow the spread through other means - including curfews, masks, limits on gathering.
But of course, there's that subset of society who think their rights to live life as if there is no pandemic trumps the rights of the rest of us - including the vulnerable - to be as safe as we can and remain part of society.