You didn't have to reply to what was obviously an AI spam bot.
If someone comes in, responding to the previous post by merely rewording what they said, and/or say things that sound too generic - in this case, they were saying that "they should check out some sites or forums" - which is a bizarre thing to say when they are already in a forum on a video game map web site, then they are AI bots. It's also particularly weird that they responded to a fairly old request of something that, as you noticed, has already been fulfilled.
No one actually talks like that, all verbatim and vague and unaware, so they're bots, and boom - banned. I haven't had a false positive in identifying bots (or at least, no one's complained about a ban applied to them), so, if there are any newcomers here - don't sound like a bot, please. Say something a human would say.