And now thanks to vaccine passports they have an easy mechanism to block access to services for wide groups of people. I am 'sure' no government will abuse them

And now thanks to vaccine passports they have an easy mechanism to block access to services for wide groups of people. I am 'sure' no government will abuse them to restrict the people they find undesirable, whether those would be an ethnic minority, people of different religion or with opposing political views. Protests against the thing you are doing? Just find a single infected person in that group, then claim that the entire group must quarantine for two weeks for their safety. Protests over.