It was bound to happen. I was worried and warning about it a year ago. It's the biggest point of failure for nostr. I think there needs to be a fee-to-post system, but that's hard to implement on every relay, and a catch-22 for new users who don't have any sats.

Unfortunately, I think decentralized social media is going to be relegated to the type of people who run Linux. Or it just won't happen until a wave of new interest in Bitcoin emerges, in 10 or 20 years.