Women usually choose apparel that is flattering to their looks. Something that accents the fat is not flattering and therefor seems to be a poor choice. Most of them would look better nude than in a fatkini, because they would not be actually accenting the fat.
It's disgusting. There's nothing beautiful about being fat and the only thing empowering about a fat girl is her ability to squash small men. If you're fat you shouldn't be having a leisurely day at the beach or the pool unless you're doing laps or using the sand for assistance running to lose weight, in which case a fatkini is innapropriate apparel anyway.
Fat women should leave the beach to the beach babes and normal plain girls at the very least and be in the gym correcting their appearances.
If plus size girls want bikini i say why not? I like thicker/ bigger girls they are sexy ! I do not want skinny girl cause i find it complete turn off If i met girl weighed 120 i would hope she gain least 40 lbs it just does something for me