So far accessing old storage media from 50+ years ago hasn't really been a problem. Reading old tapes and punch cards/tapes or even early hard drives is something that a single motivated hobbyist can achieve in a few weeks or months with a microcontroller and patience.

But it's more difficult to imagine that 1000 years from now someone will be able to read from a PCI-E NVME drive if the specs get lost along the way (ignoring for a moment that flash storage most likely won't retain data that long).