I get that this post is a bit of a satirical question, but as a serious answer to the question. I think it's because for a lot of people it is impossible (or feels impossible) to not consume fossil fuel products. If we then label it as bad then we feel like we are thus the bad guy while we feel powerless to not be that.
Basically people are forced to be something they don't want to be thus to cope they make it their personality because that gives a sense of control over choices we really do not have a say in.