No one is really "free" but the US is the free-est country there is, thanks to its constitution.
Military controlled countries are far from free, though free-er than religious controlled countries.
I don't begrudge anyone the opportunity to take care of their body or be healthier. But I don't necessarily think it's decreasing. You just have to know where to look. If anything, it's making a resurgence due to the body positivity movement.