Balanced interpretation of Aletha Solter’s work (author of The Aware Baby, which encourages letting babies and children whose other needs are met to cry in arms to release stress).
When I first heard of her position, I was nervous because it seemed too close to encouraging crying-it-out and discouraging breastfeeding (or I feared that’s what people would make of it, which as you point out, can be the case). However, the flip side is it has given me chances to examine what makes me so uncomfortable about my children expressing emotion and realizing that I don’t always need to respond with the breast. For instance, now I often hug or offer verbal comfort first, talk through the situation, and let my toddler ask for the breast if that’s what he needs instead, rather than assume he wants to nurse, as if having him nurse is the fastest way to shut him up and turn off the crying. The younger the child, of course, the less talking-through can happen or be useful, but reading her work did offer me some reassurance and lead me to this self-reflection of when I was using the breast perhaps inappropriately.
However, my little ones have always nursed a LOT, including comfort nursing, so I think any reading of the book should be taken with common sense and compassion in mind, even as some of her lessons might be beneficial.
My own experimentation on the subject: "The aware parent: Becoming comfortable with crying"