Anthropocentrism, also known as homocentricism or human supremacism, has been posited by some environmentalists, in such books as Confessions of an Eco-Warrior by Dave Foreman and Green Rage by Christopher Manes, as the underlying (if unstated) reason why humanity dominates and sees the need to "develop" most of the Earth. Anthropocentrism is believed by some to be the central problematic concept in environmental philosophy, where it is used to draw attention claims of a systematic bias in traditional Western attitudes to the non-human world. Val Plumwood has argued that anthropocentrism plays an analogous role in green theory to androcentrism in feminist theory and ethnocentrism in anti-racist theory. Plumwood calls human-centredness "anthrocentrism" to emphasise this parallel.
One of the first extended philosophical essays addressing environmental ethics, John Passmore's Man's Responsibility for Nature has been criticised by defenders of deep ecology because of its anthropocentrism, often claimed to be constitutive of traditional Western moral thought. Indeed, defenders of anthropocentrism concerned with the ecological crisis contend that the maintenance of a healthy, sustainable environment is necessary for human well-being as opposed to for its own sake. The problem with a "shallow" viewpoint is not that it is human-centred but that according to William Grey: "What's wrong with shallow views is not their concern about the well-being of humans, but that they do not really consider enough in what that well-being consists. According to this view, we need to develop an enriched, fortified anthropocentric notion of human interest to replace the dominant short-term, sectional and self-regarding conception." In turn, Plumwood in Environmental Culture: The Ecological Crisis of Reason argued that Grey's anthropocentrism is inadequate.
It is important to take note that many devoted environmentalists encompass a somewhat anthropocentric-based philosophical view supporting the fact that they will argue in favor of saving the environment for the sake of human populations. Grey writes: "We should be concerned to promote a rich, diverse, and vibrant biosphere. Human flourishing may certainly be included as a legitimate part of such a flourishing." Such a concern for human flourishing amidst the flourishing of life as a whole, however, is said to be indistinguishible from that of deep ecology and biocentrism, which has been proposed as both an antithesis of anthropocentrism. and as a generalised form of anthropocentrism.