I actually think you're right here. I just don't understand why Arteta thinks this as Saka has never been a good goal scorer. His record must be about a goal every 4 or 5 games and he's never been a player who has really created his own goals.
Arteta has a complete blind spot when it comes to him, which is incredibly strange. To an extent, I understand why the media give him a free pass and why fans apply their favoritism but the manager....??
If anything, if I had to rely on someone doing something I'd be more comfortable with Martinelli being more likely.
That said, I do think Saka does exactly what is asked of him, from a tactical perspective, in terms of holding that wide position to create space for Odegaard...but that's hardly a complex deliverable and any player with a full set of chromosomes could do it.
The whole Saka thing is just bizarre. It really is.