I saw in another post that AMA is apparently copyrighted (which is ridiculous, but I guess rent-seeking fuckwads are gonna do what they’re gonna do). At worst, what that means though is that if the fuckwads at Reddit care enough, they can arrange for a DMCA takedown if someone uses it.
And unless they’re even more stupid than I cynically presume, Reddit isn’t even going to do that, since the last thing they should want to do is try to establish a precedent of criminal sanctions against forums that host copyrighted material.