I didn't see the programme, and judging by these descriptions, I certainly don't want to, but Jonathan Swift published a satirical essay called A Modest Proposal in 1929, in which he suggested that the problem of famine in Ireland could be solved if people there either ate their babies, or exported their flesh to England.
So the idea is hardly new. If it is meant only as a satire as Swift's essay was, it may be distasteful, but is hardly sick.
If it was meant seriously, it is no worse than the cult being uncovered in Kenya right now, where a pastor encouraged his flock to starve themselves and their children to death in order to meet Jesus, or the Nazis making lampshades of human skin. Both are sickening, as are any and all atrocities.