>It is absolutely not the same in Europe. It is my experience across 4 EU countries and 30+ interviews. If it doesn't match your own experience there's nothing I can do about it.
>In Germany, you are expected to give honest (and sometimes brutal) feedback, but always with a way to improve in mind.
You are expected by ... law? In which case it's a legal requirement and not an expectation. Or expected by ... candidates?
Also, the devil is in the details as German culture and language is often designed to cleverly camouflage negative feedback as neutral or positive to avoid lawsuits, so you can definitely have generic cookie cutter rejection messages that legally qualify as "honest" like for example in your Arbeitszeugnis.
How would you legally challenge that if otherwise? Do you sue the company because you feel like their feedback wasn't brutally honest as per your expectations as it was too generic and "nice sounding" and had nothing bad to say about you?
IMHO you choose a bad example as German corporate culture is not as "brutally honest" as you portray it to be, quite the opposite, it's just very good at pretending to be honest.
From my personal experience across several countries, I've noticed the more difficult it is to fire someone and the more anti-discrimination laws exist in that country, then the less honest and more generic your feedback will be, if you get any feedback at all and it's not a generic automated rejection.