If you read what he actually said, it equates to "If the EU banks were mad enough to start holding significant amounts of crypto, we'd have to regulate them". Whether you think that's correct or not, it certainly doesn't come over as a very positive statement.
One or two speakers touched on Bitcoin and other cryptocurrencies. Let me first say that we are not observing a systemically relevant holding of digital currencies by supervised institutions – by banks, in other words. Actually, the credit institutions established in the European Union are showing a limited appetite for digital currencies like Bitcoin, notwithstanding the high level of public interest. However, recent developments, such as the listing of Bitcoin futures contracts by US exchanges, could lead European banks too to hold positions in Bitcoin, and therefore we will certainly look at that.
However, we should understand that Bitcoin and other digital currencies are in the unregulated space and should be regarded as very risky assets. Virtual currencies are subject to high volatility and their prices are entirely speculative. Banks should measure the risk of any holdings of digital currencies in their portfolio accordingly. Right now, digital currencies are not subject to a specific supervisory approach. Work is under way in the Single Supervisory Mechanism to identify potential prudential risks that these digital assets could pose to supervised institutions.