If that is their thinking, then they are quite naive. Comparing WeChat's success in tackling payments with a crypto-based attempt is laughable. WeChat is using real money, and it has explicit official endorsement by the state - an extremely powerful state at that in terms of internal control.

In contrast, any crypto-currency based solution will be inherently distrusted, and few if any states will endorse it. It is more likely to be actively discouraged by many states, and the crypto support may well end up as a pretext to ban Signal on economic rather than censorship grounds.

It is overall a disaster of an idea.