I think that's a very harsh assessment ethelbags. It was an interesting, informative and, I think, moving programme - I'm not sure I would classify it as "entertainment".
For someone with a close relative who has dementia I would have thought this programme was very helpful and, in some ways, reassuring.
The lady who went to see her husband twice a day even though he wasn't really sure who she was, would, I feel certain, not have been happy to allow her husband to be filmed unless she thought it was done sensitively and with the best intentions.
Why should people with dementia be locked away and never seen, like a dirty secret? According to the programme, dementia is something that one third of the population will experience and we need to face it full on rather than pretend it can't happen to us or the people we love.
What I did find a bit offensive was one of the programmes about the emergency services which dealt specifically with what was called the "problem" of an ageing population. Some of the paramedics (though not all) had, I thought, a slightly disrespectful attitude to elderly people and seemed on one or two occasions to find them rather comical. I understand that people dealing with distressing situations have to use humour to make the job bearable, but I think this would have been better kept under wraps than aired in a TV programme.