The only thing plasma gasification can't deal with is elementary waste, like nuclear material or heavy metals. Because if you make a plutonium plasma, it's still plutonium, but now it's a plasma, and that would make Doctor Doom hide under his big green cape like it's a safety blanket.
It's a particularly smart way to dispose of poisonous waste. It's also a particularly smart way to dispose of most other waste. It's just smart all over. It costs energy to run, but fusion plasmas will give us that, and we'll be getting useful output instead of filling chunks of our extremely finite planet with garbage. As well as diverting waste from landfills, it has potential for landfill mining, going back over our old rubbish and dealing with it properly this time. We could literally destroy our past mistakes with a plasma torch. That's the kind of gloriously empowering Utopian fantasy even video games never thought of, and video games think plasma can fix everything.
"Eat BFG, incipient back problems!"
Aircraft carriers are installing Plasma Arc Waste Destruction Systems to target enemies of the entire planet. It's accelerating us into the future so fast it's going to turn trash into jet fuel. Plasma gasification's only downside is that it costs money to build the plants in the first place. Understand that every time anyone talks about being unable to deal with their waste. We are absolutely able to deal with all that waste. They just don't want to pay for it.