Are German prisons as scary as US (from what I’ve seen on TV) prisons or South African Prisons?

Nope, not even close from what I hear about the US prison system. It still sucks obviously and we just had a scandal in Augsburg where inmates have been tortured (beatings, not enough water provided, forced to stay naked, sleep on the floor etc).

That probably depends on which constitution you’re talking about ;)

But I wonder if “for-profit organization may not use recommendation algorithms” would be constitutional in e.g. EU countries.