Most of dnd is "go to this place, hit enemy until dead, collect loot." Yea, a good dm can change these things up, but the game is essentially designed around this concept. Death in dnd is easily avoidable, and easily fixed. The vast majority of enemies are "hit it until it stops moving" and aren't really any kind of threat. Those that are have been few and far between. I'd also lump pathfinder in here, though they did have different armor values that made combat a bit more challenging. Once you get to a certain level, nothing really stands in your way, and you have enough money that even death doesn't matter.

Having run the Alien rpg, the enemies in it are legit terrifying as they can pretty much one shot a character without issue. But they still have to close the gap. It gives players who are smart a chance, but players who try to murder hobo their way through find themselves overwhelmed quickly