I suspect a different motivation behind that. Remember, the big banks don't need crypto currencies, blockchain and that stuff - they have established a system that works perfectly for them and their interests. Crypto has no benefits for them, its a threat because they cant control and manipulate it to their liking.
So there are only two options: to prohibit it (which is almost impossible) or to adopt it, in order to gain influence in the whole thing. I guess that's what this is about.