alt Hacker NewsWe are increasingly finding bacteria and fungi that eat various plastics. Not just lab-grown, but actual organically evolved bacteria eating PLA and the like
That said, I doubt this will become apocalyptic. Wood is highly biodegradable, yet even untreated wood will last decades if you keep it dry and away from soil. Microorganisms eating plastic will make it less weather-resistant and maybe worse food packaging, but it won't kill all use of plastic
We already make car wiring insulation out of soya-based plastic, which is highly biodegradable and palatable to micro- and macro-organisms of all sorts.
Which is why so many modern cars have weird electrical faults and fires.