Even if this is true, if people are voting based on climate in the first place then this isn’t going to make them go “well, might as well vote for the LNP” more they’ll go independent or Greens as we saw in the last election.

We have preferential voting anyway, focusing on the big two parties is immensely myopic and a stupid argument that everyone used to silence legitimate criticism of the Democrats before the last US election. (The Democrats lost because they had a shit platform and didn’t care, not because people criticised them)

The main goal of basically every climate activist group right now is to force whoever forms government to do so as a minority. This is both good for climate, and liberal democracy as a whole by helping move beyond a two party system. (Not that I have any love for liberal democracy in any form, but it’s still a positive change)