Not necessarily. Did you hear about the explosion in a junk yard which resulted in a perfectly constructed Boeing 747?
Did you hear about the junkyard filled with self-replicating cellular junk?
The problem with your analogy is that humans are built from naturally found components. If humans were robots and all around us was carbon-based life forms, then you’d have quite an argument in favor of design. We (and other animals) are able to consume (most) plants because we’re all made from the same building blocks. The hilarity of creationists who hate evolution is that God went out of his way to design things using evolution— basic getting more complex, but with the basic still evident.