The iceberg breaking off wasn't caused by climate change and won't contribute to rising sea levels from what we know right now. The issue here is that by breaking off, it enables the glaciers to melt faster and pour into the oceans more quickly. That's what has Gore and other environmentalists concerned.
Most likely even if he did mean it that way he wouldn't have said it. As a consummate politician I'm sure he worded it exactly as he intended. The goal is to raise awareness to his agenda not spread the truth. This type of misleading is very common in our media today because while it's not really the truth they can easily explain it away just like you did. Whether he's actually an environmentalist or not you need to keep in mind a vast part of his fortune comes from and is tied into the "Go Green" movement.
MY MOM
(Sound of high five in the background)
You didn't Google very hard...
GUESS THE FAKE NEWS!!