Totally. Bitcoin is not a medium of exchange (cash). It’s not useful for payments. Bitcoin is currently a bet that digital scarcity will bring back the concept of saving (SoV) so that people don’t have to invest in equities just to protect their purchasing power. Only the people making this bet will be affected if Bitcoin fails. The monetary system will keep moving forward unaffected. If Bitcoin succeeds, eventually the price will slow down and it can be used for cash. That will have to occur many decades down the road, if it ever occurs.
As for backups, the Bitcoin ledger is likely the most durable dataset that has ever existed. Backups are made daily at every layer across the world and there is no central point of failure in the network.
Shutting down the Bitcoin network would take a world war, and even then the network would survive through backups and the will of network participants to bring it back.