There are vast demographics for which this is actually the case. Children under 18, for example.
If you think these passports will only ever be used to check for Covid vaccination status, or that they'll be rolled back once Covid is no longer killing appreciable numbers of people, you're as gullible as they come and I can only assume have been paying no attention to how these sorts of "temporary," "for the duration of the 'emergency' " measures have progressed over the past 20 years. This is the tip of the spear for implementing permanent a social credit system in the West.
Yeah, let's let the state mandate that you buy an injection every year from private pharmaceutical companies, with extremely dodgy records and motivated entirely by profit, just to participate in normal life. What could go wrong?