This IMO is a game-changer.

If Cash App could generalize nwc strings with $cashtags then it would be easy to use services with Alby's Bitcoin Connect.

Basically 50 million+ people have Cash App and access to a spender's Bitcoin wallet. Being able to log into apps using Cash App's identity would incentivize to build platforms to monetize user experiences instead of centralized subscription services.

The other benefit to this is that developers can create web experiences directly on social media using DIDs, e.g this is what I do and you can instantly launch inside of Primal's in-app browser.