I think the reason people are concerned about CO2 and greenhouse gasses is that we know they will end up hurting us, while industrial waste is not something to

I think the reason people are concerned about CO2 and greenhouse gasses is that we know they will end up hurting us, while industrial waste is not something to be concerned about at the moment beyond local effects. The fact that this is 'damage we don't even understand yet' points to this simple fact that this is not a significant problem and can safely be ignored while we work on the problem that we know will have serious long-term consequences.