conveniently ignoring the ice elsewhere in the world, which in many cases is growing rather than shrinking

That's the strangest argument to make. Should we therefore conclude that we don't have to do anything? What we are facing is just a question of ice being distributed around the globe in a different manner, but apart from that everything is hunky-dory? I won't go skiing in the Alps any more, but the North York Moors are starting to look promising?

And these increases more than offset the observed decrease in the Arctic, Antartic and Greenland icepacks? And those of the Alps, the Himalayas and even Mount Kilimanjaro, all of which are known to have permanent ice covers in decline?

I doubt any increase is offsetting all that.