That's mostly due to German older generations being tech-illiterate and skewing the statistics, like the boomer politicians who want to have their internet "printed", and my 50 year old ex-manager who refused to use Jira and had me send him a weekly email with the tasks in progress and their status.
On the other side of the spectrum, if you look at Germans under 30-35 they're all super connected via privacy shoddy apps like Telegram.
>Cash is still king
>[...]if you ever being to Berlin, and you want to go to a restaurant, you better bring cash. No body accepts cards or electronic payments there.
That's only due to rampant tax fraud in Germany's gastronomy sector and other small businesses.
So privacy there means privacy from the taxman, which is unfair for those who have to pay their fair share of (not small) taxes and support the burden of the social system.