One of the characteristics of the Coalition’s approach to climate over the decades is that it has only ever been a political issue, not a policy issue. No-one who led the Liberals, with the exception of Malcolm Turnbull, actually thought the climate crisis was either real or worth doing anything about.
In the mid-Howard years, when the Australian Bureau of Agricultural and Resource Economics and Sciences was used as a Liberal Party propaganda unit to invent modelling about the alleged impacts of climate action, climate was a weapon to be used to attack Labor.