This move was wildly expected as the Banking Rule that the SEC had implemented was terrible. Banks that wanted to offer crypto services had to treat BTC and any other crypto as a liability to matter what. If they still decided that they wanted to they were subjected to strict capital requirements, significantly raising the financial and regulatory risks of offering crypto custody services.
This essentially killed banks from doing anything with them because of the cost and how it would mess with their numbers being forced to chalk it up as a liability.