Splaat isn't trying to be pretty. He is a stick figure, but one that feels "broken" in the best way possible. His movements are often jerky, his limbs detach, and his facial expressions stretch beyond the boundaries of his face. The "Hand" aspect usually refers to his simplistic, mitten-like construction.
If you're looking to create a post or engage in a conversation about the "Splaat!" hand gesture or similar internet phenomena, here are a few suggestions on how to proceed: splaat hand