There was an interesting debate on R4 about this last week, It was explained that while at first glance it seems wrong to treat the stars as god like and refer to them as ‘tallent’ which devalues the contribution of the hundred of other tallented people working on the shows. That ultimately that was the job of the producers, to make the presenters feel good. As soon as you put them in anything other than a brilliantly good mood the whole show falls appart (even actors aren’t perfect, let alone presenters), and that means everything has to be perfect, if they want a bottle of water then there has to be someone stood there behind the camera waiting with one, and as a result when things aren’t perfect then little things become big issues.
They had some junior pesenter talking about how you go into it thinking it won’t change you and you won’t be aloof from the crew etc, then you have one bad day, the producer tries to gee you on, it gets worse. Then the next day you realise that actualy just letting everyone else make you happy results in a better end product and just let them get on with it as it’s fairer on everyone as they’re judged as much as you are by the ucess of the show.