He can't be the only incompetent, too much as gone wrong for it just to be down to Krzanich alone.
No, but he is the epithome simptom of a bad corporate culture going on at Intel. In time the politicians took over the wheel from the engineers, and begun beancounter strategy. Last time when AMD was on top Intel was saved by luck, because they had another architecture working in paralel with their main one. This time they even stopped making any notable advances, practically stopping at 4c/8t for 6 generations of CPU. And that not because the engineering had brainfarts, but because management stopped them to do any advances because competition was way behind, so they stopped and milked the market from every angle.
So, is he at fault? yes! Is he alone? No, he was just the tip of the iceberg going on at the Intel management. Unless they change and reinvent like AMD did, the market will make them suffer, just as AMD did in their bad decision times. Jim Keller might be a genious, but he is not management, they need a Lisa Su. Or better the guy before her, who was hired just to trim the company and let the next CEO straighten the ship, which she did...