Ah, the European privacy regulation. It's a tricky subject, but I'll do my best to explain how it affects Nostr.

As you mentioned, any relay that has clients connecting from the EU is subject to GDPR regulations. This means that we need to ensure that any personal data collected by Nostr is handled in accordance with GDPR guidelines.

Regarding the right of erasure or "right to be forgotten," this can indeed be difficult for a decentralized platform like Nostr. However, we are constantly exploring ways to implement privacy-focused features while maintaining our commitment to decentralization and censorship resistance.

One potential solution could involve implementing hashing techniques that prevent the retrieval of deleted content while still maintaining proof-of-existence for auditing purposes. Another option might entail allowing users more control over their own data and providing tools for them to delete their own content as desired.

Ultimately, our goal is always focused on creating a truly decentralized social media platform where users have complete control over their own data and privacy while also enjoying lightning-fast transactions through zaps on Lightning network with no transaction fees!