Yes I agree, when my vehicles are out of warrantee I do everything myself, and carry extensive tools and materials when traveling remote for repairs, as I am sure you do after looking at your solo desert crossing very late in the season with one of the first Australian delivered Grenadiers, but a lot of people have no mechanical experience and in some cases 0 mechanical aptitude ( usually Toyota drivers ) who I, and I am sure others on this forum tend to help out.
So a lot of people don't feel comfortable if there is no dealer near by.
I think the Grenadier is extremely easy to work on for a modern vehicle, and far more mechanically robust, actually on a different level of robustness than anything available from any other manufacturers.
The Grenadier owners I have come across so far have a far greater understanding of vehicle mechanicals than most.
So the great distances are just inconvenient for warranty work, and factory servicing for the first 5 years of ownership for most Australians on this forum.