I agree that the phrase is probably true. BUT, I don't agree with most of the statements made here...
It is true that emotional eating is a serious issue - but whether the person chooses sweet or savory items surely is more of a genetic or childhood preference for such foods.
I don't think that a preference for sweet foods is necessarily a lack of good love right now - though could easily have roots in childhood issues. For instance, my husband has a serious carb tooth due, in part, to these being excessively restricted in youth. This child was not permitted candy, so is making up for it in adult life.
Salty snacks for brain food? Maybe, maybe not. My ex prefers salty foods, but my husband (equally brilliant) needs snacking in general - as do I when I'm working creatively.
I love smoked foods, but though I like my tea strong, I also like it milky and definitely not bitter!
I've never done much seasoning to my food and though yes, I try to take things cautiously, I also end up doing crazy things that none of my friends would try doing! Most of my closest friends consider me very brave.
Back to my husband - a lot of his snacking is done at super speed, and I think this is also due to the fact he had to sneak snacks as a child. He's never quite got over that!
So, those are my thoughts. I think a lot of eating issues are caused by parenting, not by some supernatural signs of current personality traits. (And I'm about as open to the paranormal as it gets!)