This explanation would have credibility if the announcement included BofA and Wells. Without multiple major players entering with them, it is only a wish.
JPMC still controls who is allowed to exchange tokens. Which means that you still have to transact through JPMC to exchange tokens as JPMC controls the blockchain.
If somehow they don’t retain majority control of the blockchain, then you technically don’t have to transact through JPMC but I don’t see that happening.