It's great that that option is available for more technical users. But even for them, it's only worth using with static IPs. That setup doesn't scale & isn't worth using with a relay run by the average Nostr user who wants to quickly set up a node on their laptop running at home which likely uses a dynamic IP. Nostr adoption would be hugely helped if anyone with a standard internet connection with a dynamic IP could download a relay app, run it on their laptop, then give people an npub which their clients could use to stay connected to that relay even with IP changes. No purchasing a static IP (which is also easier to censor) or domain is required, & it would make Nostr way harder to censor.