Orochi is still bumbling and foolish. I think some have gone a bit overboard with how Machiavellian he is. So far, there's lots of secrets he doesn't know, and the ones he does know were relayed to him by a third party. Sure, he formulated the plan based on the info he received, but it still translates to only half the job getting done. And we've yet to see the true results of it.
Imo, Orochi is but an opportunist. He strikes any chance he has at more power. He doesn't know the meaning of loyalty or principles. It's why he live a hedonistic life as Shogun, and expects everything handed to him on a silver platter. And when things go wrong, he runs behind his muscles like Kaido or Kyoshiro. Never taking responsibility like a good leader should.