The problem with this is that it is very obviously forward planning for further development. If, in 30-50 years we do start seeing the Ice retreating (this isn't just something that will happen, it has already happened) then we are looking at a resource rich environment for pillaging. Trump already accidentally revealed the US ambition to mine in Iceland, it's no surprise that other governments have the same ambitions. Personally, I find the idea totally abhorrent.
The real impact of humans on the planet isn't a 2-3 degree warming. The problem is that there is not an inch of the surface that isn't being touched by our industry. Plastic in the ocean trenches, plastic on Everest, particulates on the poles, in every stream, in every animal, and most recently discovered- micro plastic in unborn human foetuses. Forget CO2- it's unchecked expansion that is the real culprit. This should be resisted with every millimetre of moral fibre by anyone who values dying in a world remotely similar to the one they were born into.