There was a quirky breed of dinosaur called an “Adoptosaurus”. Adoptosauruses laid eggs and often times forgot where they laid them or whose eggs were who’s. Basically, they “adopted” the eggs they found and claimed them as their own.
Adoptosauruses didn’t eat meat because it wasn’t apart of their dino-religion. They thought eating meat made dinosaurs fat and have wrinkly skin. Adoptosauruses ate flowers because they thought it made them smell good. They thought they were the best of all the dinosaurs.
Maybe they went extinct so fast because their babies got hungry and ate each other, or the T-rexes found them and ate them, or maybe they were just stupid dinosaurs that adopted their own eggs.