Running a node is different then running a relay. Running a full node helps the Bitcoin eco-system and contributes to the security of Bitcoin.
Your just agreeing with him because your relay is free. I'm going to join your site and spy and investigate and write a review about it but I suspect there might be relay. Or I could be wrong as it doesn't seem it's it's a traditional relay like the one I'm running.
But you still should not be letting freeloaders join sites.