Well, since the beginning I imagined relays would have different policies for accepting users, whitelists, blacklists, anti-spam features, requiring payments, these things. That implies some level of smartness, but you can also say they are dumb with regards to not actually caring about the actual contents of the events. In any case that section you quoted was just the "very short summary" and writing that required some trade-offs. Could be better though, maybe I'll rewrite that repo entirely, or nuke it.