And the point? Ok, lets just say that I am skeptical, lets talk about what it takes.
Premise one astronaut alive on landing on Mars. Keeping alive say 1 hour, long enough to plant the spaceX flag.
1.. A ship capable of holding on man two hours, 500 kilos plus human, landing gear 100 kilo. Total required 600 kilo.
2. A retro firing ship capable of landing 600 kilo on mars. We've done that with curiousity.
3. Another ship to transport 1 human to mars and survive 18 months, health is not an issue. Sure why not we can do that. Just launch sveral F9H and join them in LEO and you can transport them to LEO, have human dawn a space suit and transfer tonthe lander.
Can be done. I wouldnt want to be the fool, but i'm not going to make a fuss about hus plan.