I think you missed the point. They put it on tape and claim it will last 1000 years. Will the knowledge, ability, and devices capable of reading tape last 1000 years?
"This vault contains the 188 reels of hardened archival film which will preserve the 02/02/2020 snapshot of every active public GitHub repository for 1,000 years."
Well that goes against multiple different sources claiming that such long-term digital storage doesn't exist. Plenty of threads on data hoarding talk about the problem of keeping data fresh even a few decades. It's pretty hard to believe any film could last 1000 years, but I'm no expert and I'd love to be wrong on this one. Thanks for the link.
I didn't miss that point, because they never made that claim. At least in the linked video. If they had, it'd be bullshit.