This is all speculative. You hope everything will get recycled and you hope that people in the future will find a way to use what's in landfills. I hold the opposing view. Most of what is produced today is not recyclable and I have no faith in people to find ways to empty landfills.
Not only is it speculative, it seems internally inconsistent.
Somehow future people will figure out how to reuse stuff, but we can’t currently be bothered.
I believe in progress! So we should experiment and figure out how we can improve the current situation.
As long as society doesn't regress and collapse due to this radical environmentalism, we will find a way. Several hundred years ago, we did not know what to do with the dark oily substance oozing out of the ground. ;-)
We didn't invent oil and could've left it in the ground. This is a man made problem that is only going to get worse.