[alexvoda]

Exactly as parent stated, there already are organisms evolving to consume plastic. The same is probable to happen for PFAS. It has carbon therefore it contains useful energy that some creature will eventually evolve to digest and outcompete other organisms.

That of course is to the detriment of the very properties we desire in these materials. Just as flooding the environment with antibiotics made them less effective, so will flooding the world with plastic will make plastic lose it's advantages. Just more slowly. This is another reason to not contaminate the environment with our externalities.