There may be something here, but I think you need to look at the ages of those palaeopoles. Some of them were billions of years ago, yet the gullies in those locations appear equally fresh as those from younger (or older) poles.

So if this sort of model were to work, it would require very long term storage of materials before they thaw, or a very limited degree of surface erosion and transport to allow old things to look fresh (and this directly contradicts the concept of exposure ages from crater counts, so is unlikely to be a go-er).

It's worth trying all sorts of ideas out about Mars, since it is so different from Earth, but you need good evidence to shake people out of their comfortable positions. So far I haven't achieved that with CO2 models, but I'm still trying...