This is why I pretty much ignore whatever my recycle pickup says is "not recyclable". They say for example not to put used pizza boxes into recycling, even though pretty much every pizza box says "please recycle". Fuck that, If something has that arrow label on it, I don't care what number it is it's going in "recycling" and they can deal with it.
Those arrow cycle logo are part of the problem. It's a plastic classification system and has nothing to do with recycling; the industry made them so similar to the recycling logo to confuse people into thinking all plastic can be recycled