Em, nobody as far as I know has criticised her for being pretty 
Most people(I'm one of them) have said they've found her irritating which is hardly vitriolic!
I also annoy myself with my irritation at seeing someone say the sort of things she says when I was younger! But she does slightly spoil the programme for me. Eg, when she commented that getting married is a narcissistic thing to do I felt like I was back in sixth form with the 'cool' crew who were desperately trying to appear sophisticated and cynical. I just can't be bothered with that sort of thing now - it's not what I'm watching GBBO for. I'm married! I don't appreciate someone three years older than my DD accusing me of being narcissistic.
And the comment about spending the week playing with her cat instead of practising (in her teeny, tiny flat) had a similar effect. And those bitter tears make me feel embarrassed for her. Is her flat in London? Em, one of the most expensive cities in the world.
Actually I do feel a bit sorry for her having to read all the criticisms about herself. But they've been about her behaviour on a tv programme not about her. There is a difference.