I believe there are people out there in the ether who find all the romanticism and panglossian caricatures of the old ancestors a bit nauseating in the first place. They would argue that it's as apporpriate as future followers of the Smorgasbord Trinity Cult leaving boiled sheep ears on the ruins of Old Trafford. In Newgrange, for example, they do not allow ceremonies even, as to do so may imply that people of a certain persuasion today have more of a claim to the site than anyone else when such a continuity simply does not exist.