The upgrade of the level of demand from "functional satisfaction" to "emotional and spiritual needs" is the core direction of the change in the needs of lesbian sex dolls. In the past, users' demand for the lesbian sex doll mostly stayed at the basic level of "appearance fits aesthetics"; now, the demand has penetrated into emotional resonance and spiritual comfort - users not only pay attention to the image design of the doll, but also pay attention to whether it can provide "warm companionship", such as expecting dolls to have functions such as voice comfort and emotional response, and even build exclusive emotional connections through interaction. This demand upgrade has a clear logical difference from the demand of futa futa sex dolls: the demand for futa sex dolls always revolves around "basic functions", and user evaluations focus on practical dimensions such as material and durability; while the demand for lesbian sex dolls has surpassed "tool attributes" and turned to "spiritual companionship", promoting the transformation of products from "static ornaments" to "emotional carrier". In contrast, although the demand for the futa sex doll also involves the emotional level, due to their niche positioning, the depth and breadth of demand are not as deep and breadth as lesbian sex dolls, making it difficult to form a trend of scale demand upgrades.

Programmable responses train interpersonal skills. Socially anxious individuals use the fat sex doll's AI system to simulate social situations: from the doll's pleasurable thrill when the fat folds are touched, to the cold response triggered by incorrect movements. A Tokyo Behavioral Research Institute has demonstrated that 40 hours of training can reduce real-life social avoidance by 58%. The traditional full body sex doll offers a single level of feedback, while the plump version's multi-layered responses (body temperature fluctuations, muscle contractions, and voice inflections) create a more realistic interactive laboratory.