It's about time (for me). But he probably thinks it's still too early to show all the cards.
I'm happy yesterday was another 'rest day' because this is the sort of profile I usually don't like. Lots of vertical ascent meters (over 4000), a long stage over 200km & a final 50km which goes up & down repeatedly on some steep gradients.
Fortunately it seems like the weather should be fine, so that's one less thing to worry about. There's likely going to be a big fight for the breakaway (which will mean a super fast start) & then if a GC team starts drilling it, some riders will feel the fatigue in their legs by the end.
What happens today will greatly impact how I view Rog's chances in the coming 10 stages tbh (i.e. if he manages today without time loss versus Pog & Vinge, I'll be very, very happy).