Couldn't a central bank hack Saifedean's recent bitcoin-as-money hypothesis?

If number-go-up is the crux holding bitcoin-as-money together, couldn't a central bank just buy bitcoin at a 10% premium from a handful of whales and sell those same bitcoins in the marketplace, suppressing the bitcoin market price? A central bank has infinity dollars, so the only cost to suppressing the bitcoin price would be enriching a few (already rich) bitcoin whales. Given that such price suppression might be essential to keeping the money printer working over the long run, the cost of enriching a few bitcoin whales would be trivial if it allowed fiat operations to continue uninterrupted. Sure, those printed dollars could eventually dissipate to the wider market and inflate prices, but it would probably take a while, and in the meantime, current and potential bitcoiners might lose interest in bitcoin.

Is this not a straightforward hack for a central bank to perform? Or have I missed something?