Why is it empowering for women to reject a short man (under 6 feet), but it's sexist and fat phobic for a man to reject an obese woman?

Question says it all, even had a user say it's evil for a man to reject on weight cause it fluctuates. Talk about some mental gymnastics.
Updates
6 mo
To that perverted person (pink) who commented nonsense bullshit and basically threatened me, or insinuated I'm doing this to shame someone.. Your comment was deleted.. And profile reported for harassment.
Why is it empowering for women to reject a short man (under 6 feet), but it's sexist and fat phobic for a man to reject an obese woman?
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