He scammed at least $400, but it seems it's not enough to get a scammer tag.
Or maybe the mods came into his threads very early on and told everyone not to send him any money and y'all got what you had coming to you.
As far as I am concerned, the scammer tag would be most useful to warn people about
not sending money to this now dead scam. Contrary to most scams, those do not require that you register prior to being scammed, everything is automated, so newcomers are at risk, as are unregistered people.
If the moderators were to obfuscate the addresses to send the bitcoins to in the first post of the three running scam threads (lottery, invest, poker fund), it would even be more useful than putting the scammer tag on the account.