A lot of secular parents think they're teaching their kids science when they feed them dinosaur trivia. Mostly they're reproducing the intellectual structure of creationism with the Bible removed.
Here is the tyrannosaur, magnificent in its design. Here is the triceratops, magnificent in its design. Here is the stegosaurus, magnificent in its design. Memorize the names. Admire the features. Buy the plastic figures.
What's missing is the unifying idea of biology: evolution.
The problem isn't that dinosaurs are boring or unscientific. They're fascinating, paleontology is real science, and fossils are real evidence. The problem is that most child-facing dinosaur content doesn't teach kids to think biologically. It teaches them to collect facts about spectacular creatures. This one had horns. This one had armor. This one had a club tail. This one would win in a fight. That's not Darwin. That's a bestiary.
And dinosaurs are uniquely suited to the bestiary treatment, because a child can't observe them. He can't watch a velociraptor hunt, compare variation across a population of stegosaurs, or test a hypothesis about sauropod behavior. He receives authoritative reconstructions from books, toys, museums, and movies, and takes them on faith. The mode of engagement is admiration of received marvels. Which is exactly the creationist mode.
Real biology, by contrast, is everywhere and observable. The pigeons on the sidewalk are living dinosaurs — you can watch them eat, fight, mate, and raise young. The ants on the patio run a society you can disrupt and study. The dog asleep on the floor is a case study in domestication, artificial selection, inheritance, and adaptation to human environments. The weeds in the driveway are competition and dispersal in real time. None of this is a consolation prize for not having a T. rex. It's the living evidence dinosaurs can only point at.
So the secular parent proudly rejects creationism, then teaches life as a catalog of separate amazing creatures with special features to memorize and admire. That's the creationist habit of mind, stripped of God.
Dinosaurs can be a bridge to the real thing — common descent, adaptation, tradeoffs, ecosystems, evidence, uncertainty. But the bridge usually goes uncrossed. The kid gets the names, the sizes, the weapons, the rankings, and the merchandise, and never gets the one idea that makes any of it make sense.
The better starting point isn't "look at these extinct monsters." It's "look at the pigeon on the windowsill. It's a dinosaur, and unlike the ones in your book, you can actually watch and learn from it.