Exactly. There are several other youth animated shows with themes for older audiences that are not listed in this meme, including but not limited to:
Avatar: the Last Airbender, The Legend of Korra, The Owl House, Adventure Time, Voltron: Legendary Defender, She-Ra and the Princess of Power, Courage the Cowardly Dog, and pre-Adult Swim Samurai Jack.
I could go on forever, but to reiterate the point of this meme that this person had made, no, animation isn't just for kids.