That video is strange marketing nonsense. Running a train doesn't apply the same forces and wear-down as nature will, just ask your mother.

In the 1990s, the NRC had to “take repeated actions to address defective welds on dry casks that led to cracks and quality assurance problems; helium had leaked into some casks, increasing temperatures and causing accelerated fuel corrosion”.[11]

With the zeroing of the federal budget for the Yucca Mountain nuclear waste repository in Nevada in 2011, more nuclear waste began being stored in dry casks. Many of these casks are stored in coastal or lakeside regions where a salt air environment exists, and the Massachusetts Institute of Technology posited that corrosion in these environments could occur in 30 years or less, while the NRC was studying whether the casks could be used for 100 years as some hoped.[12]

Impervious to absolutely anything, except a little helium, or slightly salty air.

And these will all be built by who? Corporations? You think they want to keep things safe or keep things cheap?

Even if this silly demonstration was a good example, the enshittification will begin almost immediately.

Its why every nuclear Superfund site to this day has not been addressed. Because there is money to be made in not really doing anything.