Why is that an issue? The Magnificent Seven was practically a note-for-note rehash of Seven Samurai, but it didn't stop it from being a good film, in it's own right. The Bear by William Faulkner was a "white indian" adventure story (at least concerning its aesthetics) but that didn't stop it from being a famous, complex piece of literature.
AvP2 didn't suck because it had a Ripley clone in it, anymore than the second movie did for borrowing very generously from the first film in terms of tropes, texture and plot. AvP2 sucked because it was a bad film, period. Covenant could have a "Ripley clone" in it, or, you could look at it like "the strongest most resilient character surviving." To me, this just makes sense, and the gender and look is purely cosmetic. To fret about those matters is to fret about window dressing. What matters is the craft of the filmmakers.