According to our legends, many of which are matched with facts, hetero men liked fat women at many points in our history, going all the way back to cave times. Good to cuddle with a fat woman to keep yourself warm, even after the discovery and use of fire.
Hatred of fat women seems to coincide/correlate with hatred of women in our times. Oh, what a surprise..and women who are in online media and write in public draw hate e-mails, no matter their size.
Telling us how we have to look is the last gasp of anti-woman and anti-feminist bigotry.
Anti-fat people are mostly not big fans of cuddling.