Dont take this as me agreeing with the previous comment but I just want to point out that smoking, fast food, etc are all things that kill you "slowly", therefore has less of a risk of overrunning the healthcare system.

It would have been smarter IMO (though probably not politically possible) to mandate the vaccine for specific age groups. If what they are trying to do avoid hospitalization, they should focus on the groups that are most susceptible. If you're under 40 for example you won't be required to take it but if you're older you would because the risk of a 40 something getting hospitalized is way higher than a 20 something.