Pretty much everyone who noticed WALL-E actually liked him very much. But at first sight, they often recoiled.
WALL-E came from humble beginnings. His place of origin was almost unknown to the people on the Axiom.
If WALL-E is a picture of Christ, then EVE is a picture of the church. And WALL-E is devoted to EVE.
WALL-E converts people. Early in the move, people switch the color of their close from red to blue. WALL-E changes them. They also lose the screens in their faces. This is a metaphor to "waking up." WALL-E (directly or indirectly) ends up switching them all back to red, a picture of Christ changing hearts and setting captives free.
WALL-E is announced with a new song. Well, in the movie, it's an old song, but it's new to everyone on the Axiom. In fact, other robots sing the song to celebrate with WALL-E.
After being sent to the repair ward, WALL-E sets the malfunctioning robots free, as well as EVE. They celebrate and singing in their new freedom, at least for a while.
Yep, WALL-E was literally crushed. At the end of the movie, WALL-E is stuck inside the holo-detector as it's being deactivated. Otto forces the device closed, knowing it would gravely injure WALL-E. In doing so, WALL-E saves the day by allowing everyone to regain control of the Axiom.
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