Has the body positivity movement accomplished anything?

Body positivity has allowed people to feel comfortable in their own bodies

Question: Has the body positivity movement accomplished anything?
Position1 of 3›: Yes, the body positivity movement has had positive impact in the world
Argument1 of 3›: Body positivity has allowed people to feel comfortable in their own bodies

Through an intentional movement of inclusion for bodies of color, disabled bodies, and bodies of all sizes, people of marginalized identities can feel loved, accepted, and confident as themselves.

The argument

The body positivity movement is based on a simple premise: that all bodies, not just those held up by a societal ideal, deserve to be loved, taken care of, and valued. The reason offered is deliberately minimal. It is not that every body holds some particular value, and not that every body can be shown to look aesthetically appealing by some broader standard — arguments of that kind still make worth conditional on meeting a criterion. It is that the body belongs to someone, and that this in itself is enough. What that premise changes is what a person has to do to qualify for regard. Under an aesthetic standard worth is earned and can therefore be lost, and a body further from the ideal has, by that logic, a weaker claim on care. Removing the condition removes the possibility of failing to meet it, and with it the sense that one's own body is a problem awaiting correction. The effect is felt most by those whose bodies fall outside the conventional norm. For them the movement means hearing narratives, often for the first time in their lives, in which their own bodies are appreciated rather than treated as a project. The phrase "for the first time" is worth dwelling on: the surrounding culture had supplied a single message about such bodies, and the movement supplied a competing one where none had been available before. That is what the accomplishment consists of. Hearing those narratives can boost peoples' self-esteem and help them feel more confident as themselves, in place of the insecurity they felt previously. The movement did not have to change anybody's body to achieve that; changing what people were told about their bodies was sufficient, and that change is the positive impact claimed for it.

Premises

[P1]The body positivity movement promotes the idea that all bodies deserve to be loved and valued simply because they belong to someone. [P2] People whose bodies fall outside conventional norms encounter affirming narratives about themselves through this movement, often for the first time. [P3] Hearing such affirming narratives boosts self-esteem and replaces insecurity with confidence. [C] Therefore, the body positivity movement has had a positive impact by helping people feel comfortable in their own bodies.

Counter-arguments

Body positivity focuses on the demographic of fat, white, cis-gendered, and able-bodied women, leaving behind many of the people who are also affected by negative body-image issues.

Rejecting the premises

[Rejecting P2] The counter disputes how far the affirmation actually reaches, arguing that the movement has centred fat, white, cisgender and able-bodied women, so many people who fall outside conventional norms are not the ones encountering these narratives. [Rejecting P3] If the affirming narratives are directed at a narrow demographic, the confidence they generate is distributed as narrowly, leaving others affected by negative body image without the benefit the conclusion claims for the movement generally.