The solutions proposed are not, however, based in reality...
We aren't all going to stop driving gas powered cars, turn off our AC, or move into 1,000 sqft houses.
All things that we'd have to do, and do rather quickly, to "solve" the problem.
The truth is, we're going to go barreling past 2 degrees C, and probably past 3 degrees C.
We'd be far better off to just prepare for that, rather than make a vain attempt to stop it.
Oh, they're realistic. But in order to pull that off we'd actually have give a shit about the future. We'd have to step out of our greed fueled little lives and put a concerted effort into making the world a better place. That simply will not happen because we're too damn stupid and greedy. As long as we can keep kicking the can down the road, we will. As long as someone stands to profit from the status quo, it will be maintained. This is how humanity has operated throughout history, and the so-called "modern age" is no different.
Why the hell do you think Exxon et al. deliberately ignored and buried the science from their own research departments? Because the cost of snow jobbing the public was a lot less then proposing and implementing actions to address the issues. A few million to the same propoganda firms that held up action on smoking, asbestos, leaded gasoline, etc.? Pssh. Pennies, but more than effective to keep the profits rolling in. Pay for the FUD, stall any meaningful action, and you can keep the profit gravy train running for another few decades. And by the time even the biggest idiots in the public finally realize there is a problem, the solution will be so painful to the general public that they'd never sign on to it.
Now here we are, some 35 years later and NOW the problem is "too big/unrealistic to solve". Well no fucking shit. If we had started taking actions 35 years ago then we wouldn't be in this situation. It's like a doctor saying you have the beginning stages of cancer then waiting until you have stage 4 cancer to do anything about it.
Now the only "realistic" course of action is adaptation. Oddly, no one wants to pay for that. Not like we could if we even wanted too considering we've spent the past 35 years paying trillions to maintain our addiction to the economical morphine known as oil. These "climate conferences" and such? Worthless. With the global economy the way it is, all the unrest, and the big bad boogeyman of terrorism no one is going to make any serious commitments to doing anything.
As always, nothing meaningful will be done until the shit really hits the fan. By then it will be far too late, of course. If we don't destroy ourselves in resource wars, we might end up learning a valuable lesson.