It isn't fair to hold people to marginally sensible standards and we don't know what the "correct" weight or BMI is for anyone based on personal genetics yet I think. The worse part is people are shaming people for it when it obviously was more advantageous in the past when it could be, and I think people are obsessed with being skinny with no basis in reality from the objectification of women that took place rampantly more and more to compare them to mere technological advantage. Being smaller makes a woman a more convenient as a soulless device to the patriarchy. Fat was marketed as the cause of weight gain and that is a complete lie because every cell in the human body has a fat layer, so people go around eating less of the thing that makes their cells,, it just makes everyone unhealthy for marketing purposes. Basically there are too many variables to make a determination of "healthy" or not in a lot of cases.