I have been watching every episode, and every time Vonny has made host comments, or expressed an opinion, I have put Ben Ikin in her place and wondered what people would think if he made the same comments. I've come to the conclusion that honestly, she hasn't been much different to him, both in his/her host role, and his/her comments role.
I believe that most opinions on her performance so far have been based on preconceived biases against her. To those that commented about her weight gain over the years, well that's just childish. What does her weight have to do with her abilities as a host?
She is actually a polished performer as a host, and will only get better over time.
I had my doubts over Fox's choice of her to host this show, as opposed to some blokey bloke, but I've been pleasantly surprised at how smoothly she has fallen into the role.