In the U.S., lead was purposely added to food until 1988, so it’s not like this is an exclusively ancient problem.
[1] https://www.congress.gov/bill/100th-congress/senate-bill/261...
Still, I wouldn't want lead pipes.
A bit of a stretch to call it intentionally adding lead to food, but in practice, not that different.
https://aapse.wildapricot.org/resources/Documents/AAPSE%20Pu...
https://www.healthline.com/health-news/common-chemicals-in-p...