If proper medical advice was available quickly, at all times, and all doctors were as efficient at diagnosing as the best ones, then I'd agree completely.
Don't forget this discussion arose from the death of a child with undiagnosed sepsis. And this wasn't a one- off case. Time and time again doctors, nurses, A&E departments are failing in their diagnoses.
No one is suggesting that looking up a rash, or any other symptom, on the internet is preferable to good medical care. Nor should it be instead of good medical care.
Too many deaths like this have been slipping under the radar. But, by making a public fuss, after the findings that the NHS let them down, these parents have raised the profile of sepsis AND perhaps other parents, when faced with being labelled 'neurotic' when they know something is wrong with a child, will feel able to challenge sloppy medical care at the source, before it's too late.