Is Gore living in a self-constructed bubble of alarmism, insulated from dissenting voices?

The Indypendent » Our Choice in the Face of Climate Crisis: Al Gore at the American Museum of Natural History

The book, which draws on conversations with scientists and energy experts at 30 solutions summits—unpublicized and invitation-only meetings with leading climate change experts—also focuses on how to mitigate the effects of forest fires, population increases and soil erosion on the climate crisis.

In the Acknowledgment section of "Our Choice", Gore lists a whole lot of people who contributed to it. 
Some well known alarmists are listed:
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Mike MacCracken
Gavin Schmidt
Carol Browner
John Doerr
Kevin Grandia
James Hansen
Van Jones
Bill McKibben
Joe Romm

I see no climate realists on the list.