These phrases come from the government's website:
The extreme heat and lack of oxygen results in pyrolysis of the input waste material (pyrolysis being the decomposition of matter in the absence of oxygen). Plasma gasification operates as close to pure pyrolysis as possible, as opposed to starved air pyrolysis which is common with incineration type solutions. The by-products are normally a combustible gas and an inert slag.
I take it that what you're saying is that this is nonsense.