mentalenvironist
(1) A person properly described as an aggressive or hostile environmentalist; one who displays misanthropic tendencies in support of "Green" causes, or one who takes their beliefs and practices to an antisocial extreme; (2) One who is mentally unbalanced, cognitively or emotionally, due to environmental factors; an Anagram of "environmentalist"
The favorite habitats of most "mentalenvironists" seem to be the chairs in front of their computers, rather than actually outside with bugs and pests, and plants, and dirt, and so forth.