Comment Re:Why? (Score 1) 484
There is a very big difference between just dumping things into the oceans as is (which is what the article you've linked to is about), and encasing them into a strong protective shell that prevents leaking, and picking specific places that are studied in advance to guarantee enduring safety and proper long-term disposal.
There are some valid objections to using subduction zones for this, but everything that I've read indicates that it is, at worst, an engineering problem that could be solved if desired, not a dead end. The only reason why it's not seriously explored is because of the treaty prohibiting it, and the treaty was originally intended to deal with exactly the kind of thing you've linked to.