That's the point, though.
Aliens are supposed to be symbols of sexual dominance. Man and woman alike are just breeding material for them. They rape and kill in the same breath, and then their adult forms abduct more lifeforms to suffer the same fate. This is part of what makes them frightening, I think, even ignoring their deathly visage. When the chestburster emerges from Kane's corpse, it's a moment of realisation. Not just that he had fallen victim to an alien organism, but that he had been raped, impregnated and that the birth cycle had taken his life.
This is why it annoys me that the Alien has been relegated to a swarm monster. It's just not thematically effective in that role. The whole concept of an Alien is based around sexual violence, and it's reasonably unique in that sense (at least, outside of folklore). When you have a swarm of Aliens fightan' dudes in a comic just to get shot down, the publication isn't interacting with the themes of the monster itself. It's just pointless action.
The only release to do that well has been Cameron's Aliens movie. Arguably, some of the games, too, but even they're more effective on an individual scale, and the facehugger enemies are instant death, which is a pretty good as transmedia narrative.