What changes have occurred in glaciers and sea levels since 2000, and were Al Gore's climate migration predictions accurate?

Since 2000, global warming has led to the disappearance of thousands of glaciers around Earth according to the UN Environmental Program. Arctic sea ice minimum extent has declined by 12.2% per decade since 1979, and sea levels have risen nine inches around the world since 1800s. However, Al Gore's specific prediction about Pacific nations' citizens evacuating to New Zealand due to sea level rise did not materialize as documented climate migration. Climate migration occurs for multiple reasons beyond sea level rise, as illustrated by communities like Isle de Jean Charles in Louisiana being affected by various climate-related factors.