Well they printed them in the original article that he is probably using for the basis of his argument so I don't think the letters page makes much difference really.
They just put those ones in to stir up a reaction. The sad thing for the Argus is that it is written in response to an article written by an ill-informed journalist who didn't use all the facts.
Well according to the BBFC website here they classified it X rated which means banned as far as I know. Also, it was shown as part of Channel 4's banned season. A bit pointless if it wasn't actually banned. Still not even worthy of shining Soccer Dog's boots.