HF2300
Insanity Prawn Boy
... If they eliminated the podium nonsense, they could still do the rest of the job.
What's more, removing that element of the role would open the position to those who don't fill the current criteria of looks and age but could otherwise be very capable of doing the job. In any case, it's a one-off job for three weeks, not a career with prospects...
It's also the case that the people who do these jobs often do them in a variety of contexts other than the Tour / podium girls, and can have really quite high powered roles in various fields. Many are degree qualified or multilingual. It's unlikely that taking them off the podium would make any difference to their employability or income.