He's too old and decrepit to be the most dangerous

That's precisely WHY he's the most dangerous. He knows he's only got so many breaths left in his body. That makes him unpredictable. He could go all in on something that years ago he'd play his cards closer to his chest. He's got so many irons in the fire and such a huge amount of money he's could start a blitzkrieg to watch the world burn before he's gone. It's been his goal since he was born.