[His jaw shifts. It's a self-serving explanation, one that attempts to deflect responsibility. It's not the same as what Terezi did, and he came to terms with her after the fact, but the heart of the matter still lies with the flippant treatment of other's lives.]

Not the point. You can keep BSing that it's up to them if they go or not, but it's still on you for telling them. They'd be dying because you're too much of a coward to take charge of your own curiosity. You're not an observer; you're playing head games.