... the body positivity movement is going in the correct direction, but it needs to be monitored to make sure we are not permitting excuses to stay at an unhealthy size when a lot can be changed to make their lifestyles healthier.

Movements don't do subtlety. The popularity of the Body Positivity Movement is due to the excuse it gives unhealthy fat people to stay that way. Take them out of the mix, and you've got a few outliers who wouldn't attract any attention at all. Fat influencers are just anti-vaxxers with a different shtick.

If you could move from less-than-average health to better-than-average health with just a bit of self-control, don't you owe it to yourself to try? And if you don't try, aren't you signaling (by your weight) that you don't care very much about yourself? And is it wrong for people to think people with low self-esteem probably deserve low other-esteem?

Social interaction is largely a tl;dr exercise. We don't have time to read every book, so cover art really matters. In a culture where famine is not around the next corner, there is no reason for anyone to be voluntarily obese. None. To be fat voluntarily is to declare that one lacks brains or will-power. What's to be positive about?

BTW, I don't find Ms. Holliday beautiful. She has a pretty face that cries out how beautiful she could be. But those tats? Really? They cry out surrender. A beautiful woman is her own artwork.