Presumably it's because it is a popular fitness wear company which advertises itself a lot on social media, where lardopotomuses roam. Bitching about a fitness wear company not stocking "real womens sizes" lets a femayo; claim to be persecuted, appear to be serious about fitness, and have the excuse that they can't become fitter because discrminashun means they are excluded from fitness, all at the same time.  Personally I can understand if a fitness company trying to be fashionable doesn't want to provide obeast sizes. Nothing as harmful for a fashion brand as becoming associated with people who look like a bin liner full of cottage cheese.