If I offended by saying spiritualist, I am sorry. Replace it with the "Those who are religious". But what is this about the Ten Commandments? What relevance does this have? Some (Commandments) are pretty good, some are essential in a society, a couple are meaningless (Who to worship, graven images, etc.). If a person goes through life following them, then fine... but so what? I have no problem with it. I follow most of them myself, simply because they are common sense...
Well the Ten Commandments is the basis of Judaism and Christianity so if you find no problem with someone following them it seems to me that the statement which I responded to that " Spiritualists not only deny their own earthly humanity, but also everything that is good in life here on earth in order to arrogantly proclaim they know more about invisible kingdoms." is just plain wrong.