But Islam often doesn't let women think on their own, their husbands or fathers are to think and choose for them. That isn't always the case, but often is.
I don't think it's subjugation so much as it is convenient for them to hide their overweight bodies. Just an observation that women who cover up fully also tend to be overweight/obese.
No, but most in the west are. They're certainly trying their best to keep it a secret under all that cloth. Just to clarify I'm not referring to women who only cover their hair but otherwise dress normally.