Christian Gnosticism causes us to reject our responsibility as stewards of Creation, and keeps us from admitting that Christ is Lord over every part of his creation. If anything, this disobedient retreat from our God-given responsibilities means Christians are ensuring that Jesus is denied as Lord of creation. It's obvious that this influence causes our stewardship over the ecological state of the environment to suffer. After all, the environment is material, and it is destined for extermination anyway. Stewardship in just government suffers as well, since no Christian should be involved in worldly pursuits.
Secular work is divorced from spiritual service.
Our calling in this world does not require spiritual justification to be honoring to God. The worldliness evident in anti-worldly Gnosticism is the net effect of attitudes and beliefs that see all matter in creation operating independently of God. Gnosticism disdains culture in general, including dancing, drinking, reading secular literature, or going to movies. Rather, this thinking limits sin to things external. It ignores our guilt for inwardly giving in sinful desires.