Most women don't give a shit about "body positivity" when it's a man talking about it

Noticed this a couple of times. If a man makes a Facebook post or whatever saying that they wish men and women could be more body positive, that it was better back in the day when people were more "natural"... Women will blast him for being sexist, for assuming what women think, for not listening to what women want, for thinking that men have it harder about body image. On the other hand, a woman can write a whole lathered-up post about how women should love themselves, that we've been a lesser version of men for so long, that we deserve to be celebrated, that it's so important for girls to feel good about their bodies. And women will be all like "omggg YESSSS love LOVE this post this is such a strong woman omggg the Goddess is speaking!!!" It's like, if a man says it's not okay to be fat, that's sexist, don't talk about our bodies because you know nothing about how it feels to be a woman!! If a woman says it's not okay to be fat, that's totally fine. I think there's definitely places where women struggle more than men, but in so many ways the whole "sexism" thing is definitely a 2 way street. Women can be sexist and it seems like a lot of people don't want to address that.