In addition to what Crabcake says, people who care enough about climate change to let it influence their vote would almost never even think of voting for a party like AfD in the first place. It is not uncommon for European far-right parties to think climate change isn't real. What's more, the far-right in Germany (and Austria) is full of conspiracy loons who think climate change doesn't exist and is simply a way for the NWO/Illuminati/Rothschilds to stay powerful.
Good point.
It applies to virtually every puzzlement about why a party would take such an 'objectively bad' position. I'll have to use that to explain why the Liberals and NDP are so rigidly pro-abortion, or why the LibDems are so stridently pro-Europe.
I mean,
I care enough about abortion to let it influence my vote, and I'd probably want to vote for the NDP if I were Canadian.