People who are turned off by Al Gore's name on it aren't going to say "now that the evidence is in, I support reasonable action" if presented with the same thing without it.

In some sort of abstract experiment, where you take hypothetical voter A and show them hypothetical non-partisan movie B, I'm sure it could easily make or break it. But in the real world, where you take Fox News watching, New York Times hating, Rush Limbaugh listening, Republican voter A, and show them "non-partisan" climate change activist movie B, they're going to be told that it's all part of the vast liberal conspiracy before the movie is even available, and they'll hate it no matter what.

When Republicanism has climate change denial as one of its fundamental beliefs, the only way to get people to abandon climate change denial is to get them to abandon Republicanism. And you can't get them to do what without being forced to admit they are actually changing their minds.