Two central bankers looked at stablecoins this week and read them in opposite directions. The ECB's Isabel Schnabel warned that their rise, almost all of it pegged to the US dollar, could cement the dollar's grip on the global system and weaken the euro. Bank of England policymaker Megan Greene said the opposite about demand: she expects it to fade over roughly five years as tokenized bank deposits take over. Both can be partly right, because they are answering different questions on different clocks. Neither said anything that changes what a stablecoin holder owns today.
What is each one actually claiming?
Schnabel's worry is about currency, not crypto. A stablecoin is a token designed to track the price of a fiat currency, and the vast majority of them track the dollar. Her case, as reported, is that the growing use of dollar stablecoins could reinforce the dollar's global dominance, undermine some nations' ability to set monetary policy, and diminish the role of the euro. It draws on a reading some economists share: that rapid growth in issuance could slow, or even reverse, a roughly two-decade decline in the dollar's global role. Push enough dollar-denominated money onto open networks that anyone can hold, and you extend the reach of the currency they settle in. The second half of her worry follows from the first: if dollars spread on-chain inside other economies, the country issuing the local currency loses some grip on its own monetary policy, and the euro loses ground it has been trying to win.
Greene was looking further out and at a different mechanism. Speaking at a conference in Croatia, per Reuters, she expected tokenized deposits to "probably take over" from stablecoins over about the next five years. A tokenized deposit is a claim on money you already hold at a commercial bank, recorded on a ledger so it can move quickly, rather than a separately issued token from a stablecoin firm. Her bet is that once banks see they can keep customer deposits by tokenizing them, that product wins, and stablecoin demand cools.
Why two central bankers can both be partly right
They are working on different clocks and worrying about different things. Schnabel is describing where the money sits now and what its growth does to the dollar and the euro in the near term. Greene is forecasting which product format wins a five-year race inside the banking system. One is a warning about a trend already running; the other is a call on how that trend resolves.
They are also not strictly opposed. You can believe dollar stablecoins are big enough today to strengthen the dollar, and that they later cede ground to tokenized deposits. If those deposits are mostly dollar deposits, Schnabel's currency worry survives Greene's forecast intact, because the dollar would still be the unit doing the work. The disagreement is sharper on stablecoins as a product than on the dollar as a currency.
Tokenized deposits and stablecoins both move money on a ledger, but the issuer differs. A stablecoin is issued by a firm that holds reserves against it. A tokenized deposit is your existing bank balance, put on-chain by the bank that already owes it to you.
What this does not tell you
These are views and forecasts, not decisions or data. Schnabel did not announce an ECB policy, and Greene did not announce a Bank of England one. No rule changed, no rate moved, no token was restricted. A holder of a dollar stablecoin owns exactly what they owned the day before, and a peg holds or breaks on reserves and redemption mechanics, not on a central banker's read of the trend.
Treat the forecasts as forecasts. A warning that stablecoins could cement dollar dominance and a call that demand wanes over five years are projections, and five-year calls on a fast-moving market are the kind that age unpredictably. Schnabel's case leans on analyst modelling that suggests further rapid spread; modelling is an assumption about the future, not a measurement of it. Stablecoin use is still fairly low in absolute terms, even after climbing quickly, so both the alarm and the all-clear are being read off an early, moving picture.
What we're watching
Whether this stays talk or turns into policy. The near catalyst is the euro side: any concrete ECB move to push a digital euro or tighten the rules on foreign stablecoins inside the bloc would turn Schnabel's warning into something with teeth. On Greene's call, watch the banks. Tokenized deposits "taking over" needs commercial banks to ship the product at scale, so the signal is real launches and real volume, not more conference remarks. Until one of those lands, this is two policymakers disagreeing in public, and nothing under a holder has changed.