Could be mis/disinformation. 😏
I think for the most part....people who got immunized....think in some weird way they are ‘protected’ and go out socializing (drinking, hanging out, not really doing social distance). So a few months down the line...they are shocked that the immunity didn’t come like they were ‘promised’.
This 3G/2G gimmick used in Germany makes you think that the vaccination is a big deal. Night clubs usually won’t let you enter unless you fit into 2G (immunized or recovered). 3G allowed you those two options, or testing in the last 24 hours.