Nothing ? It says current vaccines are potentially unable to stop the spread of new variant. The vaccine passport is a tool designed to stop the spread, based on vaccine, with a potential huge impact on our societies for the next decades..

It's absolutely linked. If vaccines were able to completely stop the epidemic, then the passport would be a temporary thing. If not then it's permanent and a whole different story.

Not hypothetical. This is actively being discussed in several countries. Relevant because vaccine passports make even less sense if the vaccines don't work.