Snowden took a long break before and his npub is still active. What makes you think he left the platform? Did I miss something?
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The response from Ryan is what I'm referring to. That's all I'm going on though. I have no reason to doubt Jack here.
To say someone left Nostr isn't entirely accurate given how npubs work, but it's the only way I could think to describe not using it for a period due to a problem.