Is there any possibility this is done just to make it blindingly obvious to the viewer that Breakfast Is Happening™?
I think it’s either that, or directors for major movies tending to be fabulously wealthy and not knowing what normal people have for breakfast.
Probably because he always outwits his opponents and always wins. He’s not any more crazy than the other Looney Tunes, he’s as smart as Bugs, and unlike Bugs, he’s never cruel and remains firmly heroic.