It's very clear that he's doing like Colby and playing up his personality x10 for attention, and its working, nobody knew who he was a year ago despite having many UFC fights, now he raised his profile and is a known fighter getting main events, just by talking shit. if he was actually crazy and trying to hurt people he wouldn't have a team of people supporting him, he'd be kicked out of every major gym. It's clear he's putting on one pesona for the cameras and another in private.
Real unhinged people in the public eye do not act like this, they go the opposite way and try hard to appear normal and good, but aren't very good at it. Case in point: Jon Jones, who's so clearly a sociopath but tries so hard to appear like a good christian boy who's just being "tested by god". That's a person who's unhinged and out of touch with reality, Sean knows exactly what he's doing.