Because Internet

Take emoji, those small images that enliven our digital messages. There are thousands of them, ranging from animals to foods to nature to common household and workplace objects. And yet the most commonly used sets of emoji are the faces and hands, like the smile, the face with tears of joy, the thumbs up, and the crossed fingers. We use emoji less to describe the world around us, and more to be fully ourselves in an online world.

Truly obscure animals, like the axolotl (a type of salamander) or the Wunderpus photogenicus (a type of octopus which, true to its name, is very photogenic), don’t have nicknames in common use

we as humans are still practically incapable of doing things without patterns