I suppose that if you are going to give birth in the sort of hospital settings where OBEM is filmed it might make sense to know what happens to a lot of women who labour there.
If you want to understand what physiological birth can look and sound like when women aren't being subject to a large number of unhelpful and disruptive practices it might be worth watching something like 'homebirth diaries' instead. This programme does show that some labours become complicated and need medical input, but it also shows what labour is like for women who are not having loads of obstructions to normal labour put in their way - like being made to push while lying on their backs.
There's a reason why disproportionately large numbers of healthy low risk mums have problematic labours on labour wards (compared to similar low risk women in birth centres and at homebirths) and OBEM shows you why this is (without explicitly telling you).
So yes - you do learn something about labour, but maybe they need to spell it out and give a bit more commentary. Like the sarcastic voice over in Come Dine With Me
"this mum has been pushing whole flat on her back for an hour now. The midwife could get her onto her knees and encourage her to push in an upright position for a bit, as this might help. However, she decides not to for reasons that nobody can bloody work out. But oh look, here comes the doctor with the ventouse! I think it's about to get interesting around here!'