Earlier quoted context omitted.
Quite the opposite. From the description in the article it will make Linux illegal unless distros and app stores comply with German law. It may ban installation of software from outside locked down app stores.
DEs like KDE already have a kiosk mode. Just add an adblocker to it, for content that’s not child friendly. Done. Zero risk to Linux here.
Something like kiosk mode does not cover it. It will have to be locked down to the point of uselessness. From the article:
"Only apps that have an approved youth protection program or a comparable suitable tool themselves will be accessible regardless of the pre-set age group."