People meme on the first neomorph scene way too hard. It's perfectly reasonable for people to panic seeing their friend all fucked up and an alien burst out of him. And reasonable to uncontrollably slip on a bloody floor. The primary bad parts there are attributable to Ridley's design of the alien baby and his overall tiredness of its lifecycle. Everything is sped up super fast now. The original chestburster had to run and hide since it was vulnerable. This one can immediately attack and kill a grown woman, then break through protective glass on a door while it's still small enough to get out but growing fast.

Point is, they were trying to make parts of it realistic and plausible and they should get credit for those. There's no way to make any of these movies satisfy viewers these days since everyone just says "I know what's happening next so I wouldn't have done it that way! Therefore all these characters are retarded idiots!"