Unfortuantely I only found this German heise news from Feb 2024. But both Signal and Threema won’t lower their security and privacy standards to be interoperable with WhatsApp.

“than expected” - what? Not sure what kind of magic DW is attempting here, but the gravity of this problem of an already over-aging population has been known for a long time, taught in schools and already factored into political decisions - just not successfully.

“With 26 years people averagly leave their parent’s home in Europe”