Call me a conspiracy thinker, but I'm confident it was part of an international scam; companies in western European countries claim to recycle things, encourage consumers to separate their waste. They process it, bundle it up, and get a checkmark for having recycled it.
But then it gets exported and put in landfills or just burned. It would've been better for the environment (largely speaking) it was just landfilled or burned in the country of origin. I don't think garbage exports / imports should be a thing.