In the sense you describe, it seems that Bitcoin as a reserve will only be a transition. What would the point of a reserve currency be in a Knowledge Age? I'd expect creativity, reputation and work to be indicators of worth instead.
Agreed. We only need reserve currencies in centralized monetary systems. Bitcoin is the link between the fiat world and the crypto-currency world.
In a Knowledge Age, worth is non-fungible.
But whilst humans still cling to stored monetary capital, then we will have these legacy systems.