We all might be dead before it pays off, but on the upside this could lead organisms the world over to figure out how to deal with our plastics problem.
It feels like this development will eventually force us to "help evolution" in this regard and heavily invest in engineering plastic eating organisms that can sustainably live in the environment.
We might not need to engineer them, they already evolved, and they might succeed us.
Wikipedia suggests the first man-made plastics were made around 1856. I'm not sure 163 years is enough time for evolution to do it's thing.
For microorganisms it's plenty of time. Things with very short reproductive cycles can evolve quicker than humans. In https://en.wikipedia.org/wiki/E._coli_long-term_evolution_ex... they state that the e. coli went through 66,000 generations in 28 years. That allows for a very large amount of genetic differences to respond to environmental pressures.