[1] </sarcasm> -- it wasn't made for this purpose.
The point was always to save lives. I don't remember quick ever factoring into any calculations when people were forced to stay home, their workplaces shut, their education disrupted, their jobs lost, for indeterminate periods of weeks, months, years. Over this past two years we could have collectively lost many tons if only we had some mandates.
So I reject your assertion that quick is a material difference between these two scenarios, and my analogy stands.
How was that tradeoff decided, who decided it and where is the justification? And you can start losing weight in your own home, on day 1. That's faster than even a single shot of vaccine, let alone two shots with a delay, plus boosters etc. So that's not a very satisfactory answer as to why some mandates for the greater good are acceptable and yet others are not.