^^^
It's a solid strategy for Connor. He can always talk his way out of a loss due to him fighting outside of his specialty, and he'll also be walking away with the biggest payday of his life - were talking tens of millions of dollars beyond what he would ever make competing strictly in MMA in a full MMA career, in a single night.
Connor and Mayweather's non-humbleness are reminiscent of Mohammed Ali and they've both backed up their talk in their careers, so it's a perfect match for one to walk away with a bruised ego. The fact that Mayweather has never lost makes everyone itch for him to lose despite acknowledging that he is a clear favourite.
We've seen what happens to boxers that step into the octagon (they get destroyed), so while this is a carnival act, it may be a necessary one to showcase what happens to an elite MMA fighter that enters a boxing ring. The consequences should be obvious but many people apparently need to see it to believe it. Always up for an education and the slim chance of a world stopping upset.