Hyphens are important.
Mushrooms that eat plastic. Plastic that eats mushrooms. 'Eating mushrooms' (ie edible) that are made of plastic.
Any more?
Plastic: Eating Mushrooms (a memoir)
Created by DALL-E using the prompt "Plastic Eating Mushrooms".
While you can eat them after boiling, it's not really a go-to example for an "eating mushroom". Really shows that there's still a lot of context blindness in AI.
Also it seems to have glommed firmly onto the "mushrooms for eating, that are made of plastic" parse.