The documentary is upsetting, you can see how with the best of intentions ( the staff clearly had a fondness for him) a brilliant wee boy's life gets totally screwed up.
Yes, the father was brutish, but like you said Bruno, not particularly out of the ordinary for the time.
But in the era of ground breaking documentaries such as those - and they were valuable - you have to wonder did putting him in the spotlight across the whole country and documenting him, also lead to his life being messed up, even people as diverse as Sam Peckinpah saw the film and was moved by it so much he wrote to Roddam.
Mini made many attempts at running away, trying to get to Roddam, claiming that he was his uncle.
I think the second one done by Forty Minutes may have done more harm than good.Though again the intentions by Roddam in suggesting the follow up was an attempt to help.