I daresay Alesha is a lovely person but what qualification she has to comment upon other dancers, I can't imagine. OK, she's been through the process but she was only made a good dancer by the efforts of a superlative dancer. Obviously she had natural talent but I can't see how that in any way gives her the authority to advise and criticise anyone else.
Seems completely bonkers to me! After all, I've played Monopoly so shall I nip over to Canary Wharf and give them advice on high finance? Oh hang on, that might actually be relevant - unlike this appointment.