I feel that if any person would accept an offer to be magically slim/fit with the snap of a finger , they should not strongly promote "body positivity ".
And may have to consider that they may not actually be truly happy with their weight -but instead, unwilling or maybe even unable to put in the work and maintain the discipline needed to accomplish what doesn't happen magically. And because of that, this persona of "this is me! Lovin it" is developed to help them defend themselves proactively or even to cope .
And It's not to be funny or a read ... it's something I seriously wish more people would consider .
I say these people shouldn't promote BP because in doing so a lot of time is wasted putting on an act instead of addressing their personal needs and overcoming obstacles that are in the way of their true desires.
Not saying this is Lizzo - not sure .. but it could be possible .