So, agent Orange is a 50/50 mixture of 2,4-D and 2,4,5-T.
2,4,5-T is banned because of the carcinogenic dioxins.
2,4-D is still used to this day, even in Europe where their regulations are stricter.
I think it’s incredibly disingenuous for the author to describe it as “half of agent Orange” when this half isn’t why it was banned, and it’s still in use today.