you're right, seth randomly showed up to an old(dead) remake of an old dead dota forum, where no one even plays dota - they don't even play mafia anymore! he doesn't know how to post a picture, and he somehow knows exactly what mafia is, without having any capacity to actually even play or be present to play
let me try and rephrase here
even if seth IS a "real" person
absolutely not even worth entertaining as a mafia player (that you can't nk n1 or ever) he instantly becomes the player you literally kill immediately because he ruins the fucking game being afk the whole time. that is the complaint if you follow the annals of nadotamafia history, feel free to peruse.
i present to you exhibit a: DONDI, matthew's premiere N1 kill. rated easiest vote by quite a number of players.
And to add on to that, seth was voting matticus as scum as was bazingaboy (who has played mafia before). Its more or less the only plausible read that they could have in that game state
my only "plausible" reality for seth is maybe supa returned. i don't even see how that would make much sense considering he would then be pretending not to know me, or this place, or mafia. weird but, if the case, functionally a bot.