i think the headstone in question shocking, it stands out completely, but the i also dont think they should be asked to remove it, (unless due to safety standards obviously). no matter what someones taste is, its how they want to mark his final resting place. i would suggest that there are restrictions, for respect out of everyone else in there.
Dunno about everyone else, but i am hoping gravestones, dont become a fashion accessory! everything else in this world is a competition, communions, christenings are all becoming large expensive shows...please dont it be the same for funerals etc.
As someone mentioned, cremation is def an option, there is a place in Ringaskiddy in Cork, and i went for a walk down there one day for my lunch (not usual place for lunch i know) and i was lucky enough to be brought in and given a tour around the facility, it is amazing, couldnt find words to decribe it! cant think of the name sorry!