Only partially correct, big difference.
It doesn't appear that way, in fact, once he learned it wasn't a firewall he started asking great questions about security - you're comments would not have prompted that type of interaction.
And I'm not ignorant enough to believe that something called NAT makes the device a firewall. Us old net guys are what keeps companies safe and secure, because we don't FALL FOR THE HYPE and MISINFORMATION spread by people like you. You can disagree all you want, but a NAT box is nothing like a firewall, doesn't protect a network like a firewall, and does not offer the same features as a firewall.
What you need to go is learn something from us OLD guys so that when you're old you may still be in this field instead of working at McDonalds.