The doctor probably reflected typical NHS gp, i.e. Only superficial understanding. Doesn't seem to have checked out for example the bmj info which is actually quite good on current scientific knowledge. There was a question she asked at the start regarding Emma's reaction to the stigma which I think suggested a buying into the bps model. Not enough recognition that not everyone could get better, no mention of the merryn croft case and her death
Emma got the symptom and severity quite well out there plus the GET issues but didn't really convey the scandal & tragedy of the neglect in those who don't recover as she did. Possible Benefits of nutrition I think we're over stated, She sounds almost symptom free now herself.
Ultimately it probably somewhat enlightened a teen radio audience who wouldn't want heavy science /politics discussed and there was quite a long chat.