In one fight sequence, a male drone synth screams and shows a pained reaction while being destroyed. Since other synths simply power down silently, this suggests inconsistent behavior for what are meant to be emotionless machines.
Wolves don't actually have alphas. Pack animals are family units. The "alpha" is just the parents. Thia who has vast knowledge of animals should know this simple fact.
Thia's explanation that the wolf leader is the one who best protects the pack as opposed to being the strongest killer who bullies the rest into subservience is actually correct. Considering Thia never brings up the inaccurate alpha hypothesis, it's entirely possible that she's simply using the term "alpha" because it has become synonymous with "pack leader", given that the rest of her information seems to be correct.
"Eel with darts" was portrayed as not so accurate in the river scene. But in Dek's shoulder it was super accurate.
When the paralytic darts hits the synths it exploded for no reason.
Despite crash landing on the planet, the Predator ship is in good condition with all the weapons still perfectly kept on their displays.
When Tessa is being repaired, Mu/Th/Ur informs her that they've encountered the Predator species which are new to the planet even though it's been established by Thia that she's seen Predators on the planet before, enough to learn their language and understand their customs.
Thia asks Dek how his species eats, then mere moments later states that she has extensive knowledge on his species.
If Dek's Father wanted his son killed so badly for being the runt of the clan, why wait until he reached his teens. He should have killed Dek when he was an infant.
Kwei was under strict orders from his father to kill his brother Dek. There was no point wasting time training him in the cave and then offering him a rite of passage hunt on the ship that was never going to be carried out because of the father's insistence that his youngest son die.
Dek portrayed as weak in body and skills, uses his environment to overcome challenges. But in the end scene, he somehow became super skilled to take down 2 Yautjas pretty easily. He should have plan something with his new "clan" or use the environment to overcome his final challenge.
It's been established in the Alien franchise that damaged synthetics speak in a distorted voice. Thia is damaged and yet her voice is perfectly normal.