Yeah, we need to figure out how to support the free Nostr infrastructure (relays, media servers, etc), because otherwise Nostr won't grow or succeed. Most ppl out there are used to not paying for social media and would (and do) gladly trade their data to big corprorations like Meta, X, Google, etc to be able to use social media for free. For Nostr to succeed we need them here and we can't charge them. So ads might be a good solution to keep the free tier alive and functional.