Happened where? Filter out the clever bots and there are maybe 10,000 people using Nostr per day, and that hasn't changed for 2+ years. In fact numbers of genuine users might even be down from this point two years ago.

Where is this growth among non-Bitcoin, non-Nostr people happening at any scale beyond a few people kicking a few tires then giving up on seeing all this content about Bitcoin and Nostr, things they don't care about?