Ha not necessarily. We could also eat it if it gets into the soil. Or drink it if it gets into the water. The reason I know is because I once left a roll of shrink wrap (the kind you'd use to wrap up luggage or boxes) down the side of my shed for a summer by accident. After the tail end of a British summer that thing was disintegrating in my hands. Had to be careful to dispose of it without just spreading it.

That wrap was more heavy duty than the kitchen stuff. It had been left in partial sun down the side of my shed and it had only been subject to a few months of British summer. Where even the direct UV index would never really exceed 7. Let alone partial shade.

So it made me realise how quickly plastic wrap can degrade in UV. You can get special stuff that's more UV resistant but it costs a lot of money. Even then you'd be lucky to exceed 7 years I think.