Telling someone to "grow up" is ageist and dehumanizes little people. Being large or "mature" is normative. Implying that someone needs to "evolve" implies that

Telling someone to "grow up" is ageist and dehumanizes little people. Being large or "mature" is normative. Implying that someone needs to "evolve" implies that simpler life forms are less valuable. You really should check your privilege and stop committing microagressions.