Complete Monster: Dezumozorlya, worshipped by the Evoliens as a God of Evil, has launched genocidal wars against innocent planets for no reason other than bigotry, for fun, or because the people of those worlds refused to worship him as a god. It also stands as the only rapist in the entire franchise as it brainwashed Mahoro so she could give birth to Lijewl and cares nothing about the fact that its acts are despicable. Despite his belief in his superiority to other lifeforms, Dezumozorlya demonstrates cruelty and sadism, such as how it takes sheer delight in the destruction it causes in the finale, which shows it is Not So Different to the beings that it despises.
Continuity Snarl: The series contradicts some details that were established in previous dinosaur-themed Kyoryu Sentai Zyuranger where it was said that the dinosaurs were wiped out by Bandora, not a meteor. Unless Bandora called down a meteor as her final attack on dinosaurs. This lends to the idea that apart from crossover specials and Kaizoku Sentai Gokaiger (and by extension, Doubutsu Sentai Zyuohger), most Sentai series are separate continuities with each other, due to irreconcilable background info between series. Engine Sentai Goonger also contradicts this and Zyuranger's extinction cause.
Ending Fatigue: Both episodes 47 and 48 have fairly dramatic narrative resolutions, with 47 featuring the fulfillment of a prophecy involving the Big Bad and 48 having an epic giant Mecha fight against two powerful enemies and the Heroic Sacrifice of Abarekiller. And then there are still two more episodes to go.
Woolseyism: The names of the Trinoids are all combinations of the three things (animal, plant, and inanimate object) that they're made of. Imagination Station's subs translates these names into English while still preserving the combination of the three items.