Older versions (https://mises.org/library/three-more-attacks-civilization) of his dishwater article, which seems to be ever-evolving*, included mention of TSP. That was dropped, then topical politics was added.

Some people with hard water still swear by TSP in laundry. Even if it went straight to waterways (I would guess most users return it to their own septic systems, and municipalities do treat waste), agricultural phosphates still dominate, like agricultural use of water compared with residential use.

* Previously, at least:

https://news.ycombinator.com/item?id=13279337

https://news.ycombinator.com/item?id=29361893

https://news.ycombinator.com/item?id=27237296

All I know is the Bosch I got two years ago uses 3 gallons of water, 2 hours, and some rinse aid, and, in near (blissful) silence, cleans my dishes better than any dishwasher I’ve used in my 50+ year life.