It makes sounds when it rams the door, but we're not talking about them ramming things, we're talking them moving around.
What's science got to do with anything about the Alien? If you want to get worked up by what is or isn't scientifically accurate we have to throw the whole thing out
This is a really weird hill to die on. They don't make much noise when getting around. This has been established since 1979. You're 42 years too late to the party on this one.