From your question, I really glean from that two major principles of sentencing: one is denunciation and the other is deterrence. I could not disagree. I certainly would agree that, by particularizing this kind of offence in relation to war memorials, I think it's a message from Parliament that this particular kind of conduct should be especially denounced.
Now, with respect to deterrence, I wouldn't go so far as to say that this would really have some sort of general deterrence ability with respect to the public at large. I think that's just a general problem with general deterrence, if I could put it that way. I'm not sure that general deterrence is really much of a tool in many cases, and I think this case is no different.
Again, I don't think there's a particular problem. In fact, I think it does send a message from Parliament that this particular kind of mischief is deserving of a higher form of denunciation.