No, bacteria (and some other things like fungi) have evolved to eat some kinds of plastic, and we don't yet know how scalable that is or if it has significant environmental side effects. Regardless, the bigger matter here is that we burn a huge majority of extracted crude oil. If we stop doing that, we can drill far less

I don't know who told you that, in human terms the plastic problem is permanent, it's everywhere, in our foodchain, in our bodies, no bacteria aren't going to save us from it. There are also virtually unregulated chemicals in plastics that get disseminated from them.