So to paraphrase, some people don't like some of the proposed solutions to climate change to choose to pretend it isn't happening rather than confront the problem?

> it’s not world ending yet but we should get ahead of it,

Sure there are fanatics spouting end-of-the-world-is-nigh stuff but fundamentally I think the problem here is it's unknown - both in terms of the physical changes [1], and perhaps more importantly second order effects due to mass migration. It might become a real problem a lot sooner than you think - we simply don't know - but I think it's certainly wrong to view the effects as a gradual rise - that average hides a lot of local/temporal variation.

[1]in terms of potential for positive feedback loops like methane release, or compensating stabilising effects like cloud cover. [2] For a region to become uninhabitable, you don't need it to be uninhabitable every day of the year - just one or two days a year may be enough - enough to kill people or crops. What's important is the occurrence of extremes during the year, not the average gradual rise.