Janie, much as I love you, you can be very frustrating at times!Really anything post UK leaving the EU is irrelevant re completing the EU pet passports, because the UK can only look not touch (re rabies anyway).
I get sidetracked looking at people's experience on rules on things because I forget that some people will have struck lucky and 'got away' with something, maybe they don't even know they did. Then they are very happy to give that info out as fact when all it does is muddy the waters.
The Pet Passport completion pages that I posted are relevant because they refer to when we were able to issue them as part of the EU. In other words, they explain in clear English what can and can't be done under the EU Pet Passport scheme. This guidance is based upon EU Regulation 576/2013 which has not changed since Brexit.
It's nothing to do with 'striking lucky' or 'getting away' with anything. It's adhering to the actual EU regulations!