Climate changes makes change necessary.

It's also telling people that they didn't do enough in the last decades to prevent the worst from happening

Populists are telling their voters that they don't have to change because only group x, y, z is responsible

The combination of the realistic and science based side telling people that it's wrong to eat meat every day and fly to vacations every year and the other side telling them to not do that is driving people away from a science based discourse which opens the door for even more extreme parties to enter.

tldr; I believe Conservatives letting their voters believe that nothing has to change and don't believe scientists is the root for this as not believing in science makes discussions Impossible and gives feelings more value than facts