The only problem with that strategy is the assumption that someone will have the player for that format in 50-100 years.
Old computer gear and old software can last a long time.
I have (or rather had, please read on) at home an old 1980s IBM PC, acquired as a freebie from a client company in Melbourne after a work project I did for them in 1990-1991.
This ancient machine stayed in a storage box in our garages in Victoria, then Tasmania, and again Victoria. It survived wo interstate moves.
Last year our local council discovered a box of old floppy disks (remember those?) they'd had stashed in a locker for some 40 years. Unmarked, so nobody knew what was on them.
Our councillor asked to borrow our PC and I was happy to let them have it. After a good leaning (which included the removal of a few dead roaches in the main box), it fired up and their IT wizard did all the usual tests. They are now using it to sequentially read and back up any relevant information on the disks, which it seems covered many important meetings held during that long ago era.
At home now I no longer have any important documents on the few floppies still in one of my storage boxes, and I never did use it to do anything photographic. So if the council wants to keep it as a sort of relic of a bygone age, I will be happy to donate it for their use, or even for community use, as long as some game-crazed freak doesn't bash it to oblivion while playing Tetris on it.
It's good that such old computer gear could be of some use in Century 21. The software it holds is one of the very early IBM DOS programs, a Lotus package, a Wordperfect 4.0 and a few odd games like Tetris, which would make it a relic from the Jurassic age...