Same in terms of quelling anxiety, but I think the commenter was referencing the fact that, in contrast to the original post mentioning 'cozy' games, this commenter is talking about a highly 'un-cozy' game.
Fairness and difficulty are orthogonal to each other, no one said the game is unfair. But it is definitely very challenging, and that’s not marketing as far as I know - I have yet to see a trailer etc for the game that says anything about difficulty. Dark Souls did that a lot more with their "prepare to die edition" or the opening of DS2.