Outstanding artefact! Man...what its this?? People unknow the greatness of our human capacity and this is undoubtedly a clear and dark example of that...
I kind of wonder the same, but pretty sure they feel honored seeing people from other countries feeling interest in japanese culture (I remember seeing something about this in a video about similar topics)
I don't think they give a shit they seem to live life without being offended by things which have nothing to do with them. It's like asking an American if they're offended Japanese eat McDonald's.