Nice picture :)

The nice thing about going with a group is that it comes with a support vehicle and water/food/bag carrying. Doing it on my own would be about 10x more intense in terms of prep, I think. I've watched a few biking videos where they started getting close to the edge on water and had to ask random houses they finally found.

  In 2001, two British ex army officers set out to climb the unscaled face of Mandela--a remote mountain rising 15,400 ft. above the jungles of New Guinea. This is the extraordinary story of their trek through some of the world's most unexplored terrain.

"be very prepared to survive in the scorching sun and dust in the desert for days without any option to resupply food and water"

I have done Central Asia from Europe to China by bike twice, most recently 2024. Absolutely no problem with resupplying food and water daily. There are food stops and railway-worker infrastructure in the Kazakh and Uzbek deserts. And while Tajikistan and Kyrgyzstan have a lot of wild mountain beauty, they are still inhabited. Indeed, local families earn some money by catering to cyclists.