They're "forever" because they persist in the environment. You're not likely to find this specific combination of temperature and solvents in the wild. It's something you might be able to use in water treatment plants in areas where the supply has been contaminated.
As the article notes, we already had ways of breaking them down, just with difficultly: "current PFAS-destruction techniques, such as incineration, can require vast amounts of energy, superhigh temperatures, and millions of dollars".
As the article notes, we already had ways of breaking them down, just with difficultly: "current PFAS-destruction techniques, such as incineration, can require vast amounts of energy, superhigh temperatures, and millions of dollars".