That's what I've seen so far, too. There is some concern (reasonably), that defenses will 'figure out' Geno because they've got a month of tape on him now. But, as you point out, Geno has been diagnosing defenses pre-snap and even post-snap very well.
Is there really a 'look' that defenses have figured out to send at Geno that he's going to struggle with? I don't know. He's got an NFL record completion percentage to this point in the season, so I mean, he's completing passes on basically every type of coverage right now.
But I'm nowhere close to an NFL Defensive Coordinator, so we'll see.