em, this defendant was not only charged but indicted for murder, was he not? The jury had that count to consider, but acquitted him of murder and convicted him of manslaughter.
In that case, blame our fellow citizens on the jury (or the judge, if he ruled that there was not sufficient evidence for any reasonable jury to convict of murder and therefore directed the jury to acquit on that count). Don't blame the CPS ; though, if they did not charge murder that would have been the decision of senior prosecuting counsel, almost certainly a QC, and not a member of CPS staff, in any such case; blame the jury or the judge. You think it was murder. The court, which heard the evidence, decided that this defendant did not intend either to kill or to inflict grievous bodily harm resulting in the death, and therefore was guilty of murder. It doesn't look as though the defendant pleaded 'diminished responsibility', a kind of temporary madness which reduces murder to manslaughter, but only that he had not had the previously cited intents. Either way, he was acquitted of murder. To argue that it was murder is pointless and against the evidence as the jury or judge found it.