The biggest problem with these new Alien movies is how fast each creature grows...
We saw it in Prometheus, Covenant and now Romulus. They've thrown the whole alien life cycle out the window in favor of fast paced action and creatures going from being a few inches long to full size in a matter of seconds or minutes.
Even the face hugger now lays an egg in and it hatches almost instantly. Isn't the whole point of a parasite to feed on the host?