I don't think the complaints are over the top, although this is probably owing to my own experience. I don't like the fact that mother's whose children go bonkers in this manner.
Since my daughter died, i've had enough trouble relating to other people, let alone them now thinking from a soap i might go banannas and steal their children. I don't actually watch eastenders, and with the current storyline I'm pretty glad i dont. A lot of the parents on the SANDS forum have been talking about the storyline, at first hopeful they might portray the death of your child in a sensitive way that tried to help other people understand what it feels like, and now just annoyed that a good opportunity to make people realise that 17 families go through this a day has been wasted by making the storyline so unrealistic and sensational