No not true about people using neem long before blah blah
Vomiting from Smoking Weed? The Curious Case of Cannabis Hyperemesis Syndromeazadirachtin was introduced to the market well before cannabis hyperemesis syndrome was first documented. The EPA first registered azadirachtin for use on food crops in 1990, according to Murray Isman, University of British Columbia professor of entomology and toxicology, with a specialty in natural pesticide botanicals
Neem Oil and Crop Protection: From Now to the FutureThe use of neem in agriculture is not a new practice. In India, the traditional farming system employed neem extracts for pest management and to supply nutrients to plants (Mossini and Kemmelmeier, 2005; Sujarwo et al., 2016). Scientific research has shown that neem is safe for workers, with no handling risks, and can be used throughout the entire crop production cycle (Boeke et al., 2004).
And that's not mentioning its uses other than in agricultural products, which that article goes into great detail on.
I can't find anything that says specifically when it was used in agriculture, but I can find articles stating its been used in ancient times dating back to 1992, 1986, and a mention of one from 1959.
Uses of neem based products in agriculture. Neem oil WS, the best organic and garden pesticide
NEEM TREE Nature provides pesticide that outfoxes insect pests
Potential of the neem tree ( Azadirachta indica) for pest control and rural development
I can't seem to find any information relating to any country besides Canada banning neem oil, and that seems to not be without its own technicalities. Mind showing me the information you have which says the use of neem as pesticide is new, and where else it's banned?