Surely if a paper straw is meant to contain liquid then we can just wrap it in a big paper bag... I guess not. Gimme plastic straws.

This is a bit of plastic, it has a useful purpose. Let it be. Not every piece of plastic is bad. Not every oil consumable is bad. It's the excess that is bad. Using a very thin and light wrapping to contain the bottle seems like a very reasonable use. And it can probably be recycled and end up as packaging material next