I don't think that it's people defending her in particular I think it's just people who are getting tired of innocent and inconsequential things getting turned into something they are not for the sole purpose of outrage.
This was clearly not anything like what the op was trying to say it was. And as many people including myself have pointed out she just went through a very very public miscarriage so attacking her at a time like this for something so completely innocent is just beyond the pale as far as I'm concerned.