If you play on a separate account specifically to play in a different skill range, then that would be smurfing. But if you play through the calibration games on that account to your best ability, then it should place you roughly where your other account would be within a handful of games.
I didn’t know this existed until I saw the Nextlander guys playing it, and even then I didn’t catch the name of the game.
Zero marketing means that unless the game is absolutely amazing, there will be no word of mouth and no buzz, leading to no one noticing the game at all.