Warm' is a relative term. Where I come from, 'warm' means 25oC. In the Rockies, 5oC is 'warm'. Unless you are there at the height of summer, you are going to see a lot of snow. Snow has a lot of novelty value for those of us who live in a subtropical climate. It makes the place pretty and hides the unsightly bits.
Hard snow is also easier to climb than scree.
What you don't have is solid rock. You don't have the quartzite of Federation Peak, the granite of Mt Buffalo, the basalt of Mt Barney or even the sandstone of Ayers Rock. What you do have are great heaps of rubble, mobile handholds and balancing rocks just waiting to do a number on someone. Sensible people go peak bagging rather than rockclimbing. Another thing missing is the bushwalkers' transport.