It generally has been. I remember saying back in January that some day we could see Twitter add Nostr support. They'd generate an npub for every user and they'd just be using Nostr and not even know it. They'd custody keys and manage them on the backend. We're actually seeing that scenario now. My bad for putting that out into the ether, I guess. 🤣🤣 But seriously, of Nostr and open and people can do what they want, them a client treating exporting their nsec as a feature should be okay too. Not all clients will be exactly the same. Not all clients will be for everyone.