First, when someone tells you that you missed his point, you probably shouldn't correct him. Second, you're replacing what my complaint would be if only tall, sexy blondes were cast (that variety would be lacking) with what your complaint would be (that it would be done just for sex appeal) and using it to contradict me.
Third, sex appeal is just a form of market appeal, of which there are several forms, including the one that I'm referring to. I feel that Disney has gone the safe route with each of their female leads, since it's an archetype that holds a lot of appeal for both men and women, probably even more than the sex appeal approach, which appeals more to men than women. I don't think that that's coincidence. It's what sells nowadays, whereas the tall, sexy blondes are what Hollywood sold a lot of films with in the past, as you mentioned.
Now you're the one reading into something. FYI, the "so called SJWs" that you speak of are criticized because they have a penchant for doing what you just did, which is taking something that someone did or said and spinning it into appearing bigoted so that they can have something to judge and condemn publicly... and hypocritically. I wonder how, in your rush to judge my comment, you didn't stop to recognize that you essentially argued just prior that all Western females look the same .