Yes I agree. But the thing is that Magnus's natural style is such that he only ever looks for small edges. No reason to change. If he's feeling especially conservative at the moment then all he has to do is not overreach like he has tended to sometimes. As you say though he has tended to be out played in the middle games in the last few games. Funnily enough it seems to me that this has generally been because he's gone for the more cautious option. The thing that always impressed me about Magnus was the fact that given 2 or 3 strong moves, Carlsen has always tended to go for the one that he thinks will cause the particular opponent a problem, regardless of whether it's slightly weaker than the other options. I'm not sure he's been posing those sort of problems for Fabi here. It must mean he respects him hugely