Original: He was a staunch critic of biocentric philosophies such as deep ecology and the biologically deterministic beliefs of sociobiology , and his criticisms of '' new age '' Greens such as Charlene Spretnak contributed to the divisions that affected the American Green movement in the 1990s .
Simplified: His criticisms of '' new age '' Greens such as Charlene Spretnak contributed to the divisions in the American Green movement in the 1990s .