At the same time it's not. Big scary looking symbols plastered over everything compared to just filling the air making it out of sight out of mind. Once that's achieved, the mass populace doesn't care. Try to build a facility with those scary symbols that are visible anytime one chooses to look, and people get all NIMBY very quickly.
We do have long term solutions. Large low oxygen beryllium copper caskets encased in steel. Drop them into a shaft bored into a mountain.
There's other ways, of course, but this was the best one I remember reading about; it's expensive but less so than the incidentals of CO2 and particulate release.
The thing is, we don't have a long term solution for storing CO2 either.
The thing I like about nuclear waste is is it's obvious, its tangle and it sits around in sinister looking containers.
As opposed to CO2.