I can be in 20 movies. But I’ll never be an actor.

Stewart draws a sharp line between accumulating credits and possessing a craft identity. The remark suggests that appearing in films—even many of them—doesn’t automatically confer the status of “actor” in the deeper sense: someone trained, devoted, and primarily defined by acting rather than by adjacent work (comedy, hosting, writing, producing). It also reads as a self-deprecating assertion of professional humility, implying respect for acting as a discipline and an awareness of his own strengths and limits. More broadly, it critiques credentialism: quantity of participation is not the same as mastery or vocation.