I think they're pretty clear in the article that the problem is that there is no centralized place to ship the waste. Having it sit out in the open where it needs constant security, next to a plant that close decades ago, is the sign of a political failure.
They keep trying to put it in Nevada, but Nevadans aren't having it. They don't trust the federal government after being lied to about the dangers of the open-air atomic bomb testing that they carried out in the 1940s and 50s.
I understand storage and bomb testing are not equivalent, but I don't blame Nevadans for being skeptical. The government should look someplace else at this point.