It is clear that where Covid passes are required, there is a thriving market in producing and selling false passes- and some doctors have been guilty of giving false passes too.
This is especially the case with links to football matches and clubbing, but all sorts too.
I have mixed feelinga about identity cards, for all the reasons you state- and yet most EU countries have had identity cards for a very long time. I found mine the other day dated 1958- required to go and spend a holiday with cousins in Italy.
In several countries, for the reason stated in first paragraph, both Covid pass and photo ID has to be presented to go into Cafés, restaurants, cinemas, theatres, clubs, etc, etc, even our U3A lectures on wednesday afternoon- despite the fact we are all known to organisers. The only way to avoid cheating, I am afraid.