Isn't that true of all one-time events, not just digital ones? I'll never be able to attend a Beatles concert or see "The Empire Strikes Back" on opening night or be celebrating on the streets of New York City on V-E Day.
In this case, it’s the Fortnite world.
If Fortnite were a game in the 1990s-2000s, the data (map, world, characters) would be on a CD or DVD and the multiplayer server would also be included on the CD: the community runs its own servers. If the developers release a huge new update - including over digital distribution - users still have the original discs and server software, thus if they want to relive “Fortnite 1997, v1.0’ they can - just reinstall it from the original media.
With the iOS App Store we used to be able to make versioned backups of the IPA files and restore them using desktop iTunes so if an over-the-air update for... say, Angry Birds, added an obnoxious amount of pay-to-win functionality then we had the choice to downgrade before things went to shit.
Now, we can’t do that. This is why I don’t buy mobile games anymore: I have no guarantees about my ability to keep what I paid for.
A few years later I wanted to show it to my kids, and the game I bought had turned into an abomination of ads, in-app-purchases, and dark patterns, and there was no way to get back the charming little game that I originally bought...
Digital experiences can be recreated, especially if motivated by profit. What won't be created are some of those moments that were unforeseen consequences (e.g. the Seed of Corruption exploit in WoW)