Since you have gone to the trouble of posting this twice, I'll offer a reply.
1) "
Any decent person would just be happy that he was put away for what he did." - I'm not sure why you think this. One aspect of our judicial system is making sure people who commit crimes are punished, sure. But there are other aspects such as proportionality and equity. Proportionality being that the sentence one is given should correspond to the crime, equity being that everyone in similar circumstances who commit the same offences should be treated and thus sentenced equally. You can be pleased that AJ was found out, arrested, prosecuted and (hopefully) prevented from offending again, and be pleased his victim has been vindicated and has justice. But you can still think that the offence he committed didn't warrant 6 years and that many others, in similar circumstances, would not have faced a comparable sentence.
So I just think it's bollocks to say "any decent person should just be happy he's been locked up" because there's more to British justice.
2) "
Any decent person would not sympathise with the length of a prison sentence because any decent person would not commit a crime like that in the first place." - Again, unsure why you think this. The fact I would never groom a 15 year old, or would never commit a burglary, or never commit crimes X Y and Z doesn't mean I can't hold an opinion that a sentence is disproportionately long. You seem to somehow think that when I say he shouldn't have got 6 years, I'm somehow tacitly saying it was ok, or wasn't really serious. Quite the contrary - I was one of the main posters on here at the time when people were making slurs against the victim who was saying how it was wrong - an abuse of power etc. But the point of the judicial system isn't just to brand anyone who ever commits a crime a criminal and lock them up for as long as we fancy. And I just don't think 6 years was a necessary or appropriate sentence.
3)
"What are people doing defending this bloke? If he got a couple of years extra so f***ing what?" - Not sure anyone is defending his crime. If they are, point them out and I'll call them a fuckwit. And it's all well and good saying "so what if he got an extra few years?" but these extra years cost society money. A lot of money. They also result, in the bigger picture, in more crime. They result in extra-stigmatisation and marginalisation of offenders. These are big issues in our society - our prisons are completely understaffed and overcrowded. This is resulting in people being locked up for 23 hours a day and when they get out they are so cooked up they're more likely to commit further crime. We need a prison system that takes repeat/ dangerous offenders and makes them safer/ less likely to offend. Sorry but giving him 6 years and the wasted resources that entails helps nobody.
There is a spectrum of sex offences. They are all *obviously* serious. But again, to repeat myself for the millionth time, I think within that scale of sex offences, this was not at the more serious end. It's still a sex offence and should be treated as such, but 6 years? Not for me.