But does it really disposes the plastic in a form that does not cause more harm? That's the entire argument. It's just as bad for the environment as it would be

But does it really disposes the plastic in a form that does not cause more harm? That's the entire argument. It's just as bad for the environment as it would be if you'd just dump it on landfills. But than you can dig out landfills later on, when you've got a better solution, in a centralized and known location. But who is going to track down and demolish all the pavements in the decades to come? These bricks are essentially guaranteeing that the plastic used will cause micro plastic pollution for generations to come. And even if you never find a solution, having the plastic in a landfill makes it possible to at least control the circumstances. You can burry it, reducing the exposure to the elements, like sun and wind. The more I think about these bricks the more I'm sure that's the worst thing you can do with plastic, except for just dumping it into the ocean.