No no, Gesink has a good team arround him to remind him to eat his jel. Even on the final MTF's Kruijswijk and Mollema will still be there reminding him to eat his jel.
The reason Gesink sometimes sucks at TT's is because then he doesn't have a team to tell him to eat his jel's, so he forgets naturally. But that is only a problem if he is isolated from his team, or in TT's where he has no team arround him. That is why Rabo is sending three GC guys to the TDF, so that Gesink will always have Kruijswijk and Mollema arround him to tell him to eat his jel. The only thing that will stop Gesink from reaching the podium this TDF is if he forget's to eat his jel in those nasty long TT's. When you forget to eat your jel in 30km TT's, you won't notice until the end, so the damage is limited. On those 50km TT's however, by the time he starts feeling that he forgot to eat his jel, he will still have 20km left to TT! That is disastrous! It is absolutely necesarry for Gesink to eat his jel in the TDF!