The point wasn't about disposing of toxic waste, as much as it was about weakening the populace of the Western Naions, by making a large percentage of them mentally and physically ill, so that much of the energy of the societies could then be expended in treatment of those ill. In order to maintain peace there must be substantial destruction of production and fluoridation fits well.
This was all done pursuant to the larger goal of disenfranchisment of the Western Nations both politically and economically, to reduce Western Man to an equal and lower status with the rest of the world, using the illusion of paper money as an adjunct. The Westerners are already far less than 10% of the world population. I expect them to be extinct within 50 years, unless the fit hits the chan.