i suspect we are never going to see eye to eye on this issue :)
it would be inconvienient for smartphone users to be back of the queue also i suspect, although i doubt it's particularly inconvenient for anybody really. As you pointed out, you dont need a record domestically, and you only need proof of boosters for travel to very few countries, and the vaccine proof is valid for 1 year after the second jab, so it's probably not affecting anyone atm anyway, and the "in due course" will happen before it becomes an issue