Certainly can't be any other reason. Not seen any recent footage, but pound to a penny Tanno is still sitting there, chewing gum, with his arms folded and his feet up, looking like he don't give a shit, and Charlie is still strutting around bellowing at people who have no idea what he's yelling...
Of course they're not. How on earth COULD they be? They're just gormless passengers on the global coach trip of the Gus Bus. It's all part of the man's hilariously absurd ego trip. Still, Charlie will get a good (& much better than the last one) book out of it one day. If it was based on merit...