Sometimes. Just as many are deluded "Christians". But as a group they are not religious at all - mainly anarchists. And Christians were the original ecologists. We call it "Stewardship".
I wouldn't call a person who claims to be a Christian and yet doesn't believe the bible a "deluded Christian". There seem to be a lot in that category. I agree that stewardship and a love for the creator of the World makes many Christians better environmentalists than many liberals.