One problem with this movie is that it creates more complications for the second one. That is, between the first two movies presumably nothing is known about the aliens, which is why no one believed Ripley. And yet this movie plus the game _Isolation_ show that many company and government personnel encountered the creatures.
That suggests no one in the movie actually survives long enough. Or are silenced if they do. The Aliens setting is made if stupid
I was thinking the same thing, but it sounds too crazy.
In the first movie, Dallas tells Ripley that the company replaced their science officer with Ash before they left. After that, Mother diverts the Nostromo to LV-426 without permission from Dallas, which can only mean that it was ordered by the ship owners to do so. Later, Ripley discovers that Ash is following transmission from Mother, and from the company, to get the alien at all costs, even if it means sacrificing the crew. Ripley reports this to the others, stating that the company probably wants to use the alien for its bio-weapons division.
After that, nothing happens for almost 60 years until they find Ripley in the second, and they tell her that they've not encountered any aliens or things that she reported. Even though the company may have known the location of the derelict craft (which is why they replaced the science officer with Ash, knowing that the Nostromo would be flying closest to LV-426), for some reason they don't bother sending more ships to investigate it, or even a crew on the ground when they built a colony on the same rock.
When the prequels were made, many personnel were found to have known about the creatures, and some argue that the reason why they had a special order and a bio-weapons division is because of that. Later, the
Isolation game was made, and it reveals that even more people knew more about the derelict ship, the aliens, or both. And then came licensed media like the company report and Colonial Marines manual which details several ships visiting the derelict craft, Burke meeting with other company officials, the colonists reporting their finds to the company before they're overwhelmed, and so on.
These mean that the company and more knew about the creatures for several decades. It gets worse when you tie that up with the AvP franchise.