I have never put much credence in mainstream media descriptions of this power couple. Most press accounts mimic or parrot each other; there is no attempt at critical analysis or fact checking. For her, the following characteristics are always touted: the world’s smartest woman, experienced (and that would consist of exactly what…?), tough, a fighter, etc., etc. For him it’s: rock star, draws approving and adoring crowds wherever he goes, is an unquestioned asset for Hillary whenever he speaks or appears on her behalf.
As a narcissist, Bill Clinton is interested in resurrecting his legacy first and foremost. Given this fact, I think you could argue plausibly that he really isn’t interested in helping his wife too much, lest he run the risk of her Presidency overshadowing his.